call early in morning about 4:30 am and woke up house

I received at least ten calls from this number over the last four days (11/15/12 through 11/18/12) mostly between midnight and 6am.  Caller ID came up as ?Debt Colls? .  At first it was just a dead tone, than they started playing broken up music as if they were holding the phone to a radio.  Than they started calling using a different number while playing the exact same broken up music.  This number was 786-409-7300 and came up on the caller ID as ?Miami FL?.  The last call was about five minutes of a person speaking what sounded like french than a short blast of music before they hung up.  A police report will be filed if they call one more time.