Applying to USF

Hi guys, I’ve applied to USF for the FALL 2015 term as a transfer student from Miami Dade College. I had all my papers sent to them may 16th, including my college transcript here in the US. then they contacted me asking if I had any other college/ university transcript outside the country and I said yes, I wasn’t aware I had to sent those too so I got them sent right away. The papers showed to me to be delivered and signed june 16th. Till this day they haven’t found the papers at their mail department and everybody tells me something different. I showed them that it was delivered and also the signature which I’m pretty sure they have seen that it was the right signature from their mail department otherwise they would’ve said something… I spent over 100 dollars to get these papers sent to them and now I’m thinking they lost it. However they keep telling me to wait a “couple more days” which has already turned to almost a month…
What should I do? or expect…? Is this something normal that happens at USF?