Who called from 4054415662

got call.  Hung up.  Tried to call it back 4x's in about 10 min span and it was busy on all attempts.

Received call on my cell phone.  Rang twice and they hung up.

Same as above, get a call, as soon as you answer it hangs up. still tracking down the number to who is behind these random efforts to collect working phone numbers.

got a call, rang once, tried calling back, said it was busy.

Same here.