received call on my cell (TMobile). call ended just as I answered. few minutes later I heard music and looked at phone and found that it had redialed same number.  I ended call and phone reconnected itself to same number with music playing. I ended call and thinking hacker I called tmobile 611. Conversation with tmobile support. They had me reset sim card and they 'recycled' my phone.  Said there was no billing record for the calls but then offered me discount deal to extend my contract until July 2113.  Since I am happy with tmobile and price was good I accepted it. I am now thinking that this might have something to do with att merger.