Housing deposit question

<p>So I've sent my housing deposit along with the form that goes along with it about a week ago. Problem is, I sent one of my personal envelopes and just yesterday I got a letter from NYU telling me to send my deposit with an enclosed envelope. I think I correctly addressed mine, but do you guys think the Bursar office turned my form away because it's not one of their envelopes? Or maybe I'm just insane and the office is in the middle of processing the deposit. Thoughts?</p>