Quinceanera for madrinas | | [Update] I'm really upset at my parish and they're not answering the phone.

I'm updating regarding this post.
I kept redialing and redialing the parish all afternoon till they answered the phone. (I should add that I'm a bit appalled that they don't have a voice mail set up or an emergency number. What would have happened if someone needed last rites or had another emergency? But, I digress.)
When I finally got the parish secretary on the phone, she was somewhat belligerent with me. The following is the gist of the conversation:
Me: Hello, this is Damsell, I'm scheduled to get married next Saturday, December 13th at 4 o'clock. My mom called this morning and you told her that there was a quinceanera scheduled for 3 o'clock on the same day.
Her: Yes.
Me: You told my mom that I knew about this. I was never told about this and this is a major problem.
Her: Well, you do realize that wedding and quinceaneras take place on the weekends.
Me: Yes, but scheduling them back to back like that isn't going to work.
Her: Quinceaneras don't take that long.
Me: Ma'am, I beg to differ. A Quinceanera usually has 14 attendants and their escorts and involves a whole mass. That takes an hour.
Her: You'll be fine.
Me: This is not going to work. I have musicians scheduled to start playing 20 minutes before the mass. I have guests arriving early before the mass. Are they supposed to stand outside and wait for the quinceanera to be over? What about parking? The parking lot is going to be full with the people attending the quinceanera. Where are my guests supposed to park? [City where my church is] has a very small parking lot...
~interrupts~ Her: Oh, you're getting married in [City where my church is]? The quinceanera is in [another city church within the parish]. Nothing is taking place at your church on your day except your wedding.
Me: You mean that the quinceanera is not at my church right before the wedding? I'm all right?
Her: Yeah.
So...that was that.
I felt a big sense of relief after crying on the phone with my sister while trying to figure out what to do.
On an additional note, thank you all for your feedback and words. It helped to keep me calm. I also wanted to add that I know how important quinceaneras are. (I actually teach Chicano studies and I'm a madrina in a quinceanera next month.) I teach about quinceaneras and I know that they are a big part f my culture (though I didn't have one). I am kicking myself for misspelling quinceanera, but I was a bit distraught and was typing fast. Additionally, I wasn't ranting about it being a quinceanera or that it was unimportant, I was upset at the scheduling on the church's part. I also pointed out that it's not a sacrament because the church itself puts weddings above quinceaneras on the schedule because it doesn't count as one. I was actually told this by the problematic secretary previously. She specifically told me that because I was going through a sacrament, they wouldn't let a quinceanera interfere with my wedding...thought it almost did...though not really.

I guess this is just a bit of a rant. I just got engaged at Christmas and am planning a wedding for December 2014. I chose December for several reasons: 1) The weather - I live in an area that is extremely hot and things don't really start to cool down till late Novembeearly December. 2) Finances - One year will allow me to put together the wedding I want with paying things a bit at a time over the next 11 months. 3) Vacation - Both my fiance and I are educators and this date works out since we start our winter break vacation soon after that date.
Now the issue. My best friend keeps harping on the fact that I picked December for a wedding. Her reasoning is that her daughter will be having a quinceanera in either December or January. She keeps harping on the fact that I'm waiting too long to get married and that she thinks I should have a June wedding. I've explained my reasons for wanting December, but she lets it in one ear and it flies right out the other.
Am I wrong for getting so annoyed? I know that quinceaneras are more important in some families than others. I know that this is important to her and I have made it clear that I will not let my wedding interfere with her daughter's celebration (that she doesn't even have a date for yet, though I have chosen my date). I have agreed to be a madrina for the quinceanera. I just am tired of hearing it I guess. Now she's saying that her mother is the one complaining about the date I've chosen (coincidentally she says her mother is naming all the same reasons she did before). I think it's just another attempt to get me to change the date.
Am I wrong at all in this scenario?