I bought an iphone 4 a few weeks ago and bought a hardshell case to go along with it. The guy at the store asked if I wanted him to put it on for me and I said yes. I did not pay attention to him putting it on and now I want to change the case and I can not figure out how to take it off and put the other one on, its not like the iphone 3 case where the bottom and top are separated and slide right off.