Who called from 5032018937

Call from this unknown number, tried to answer & was cut off, tried to call back, WONT accept call.  Who is this and stop wasting my time!

Called at 9:17A EST, 29-Dec-2011
I did not answer.
No Message was left.
Called back at 9:37A, number rings once, connects and then then immediately goes to Busy Tone.
Based upon what I see here, I suspect either a random call, or simply a misdial etc
.

just got a call from this number. I tried to call it back and like the other person said it rings once then goes to a busy tone ..

Called @ 09:47 (EST) am; did not recognize area code/number so did not pick up.  No message left so will not call back.

10;15am in Detroit....I dont pick up the numbers I dont know and this was one!