I wouldve never called back and changed my phone number. All it takes is one slip of the lip during a recorded telephone conversation to incriminate yourself. Plus giving the more contact info makes it look like you're not absconding(hiding something), but it also gives them other phone #'s to cross reference in their data base of known roid users/dealers. If your friends aren't involved in any shady shit this won't matter much. Ya never know who's doing what though. I once had a roomie that had this giant 3ft tall u haul box in the corner of his room. He told me it was old clothes he was meaning to bring to the Salvation Army. I never thought much of it. I moved into another place after a few months. Anyway, it turns out my old roomie was stashing about $200K in roids in that big box in his room. I found out by watching him get busted on the 6 o clock news. I knew he moved a little bit of juice here and there-but I had no clue we were all living with a $200K stash of roids under our roof.