Who called from 5612236428

Called my cell phone. I did not answer. Left no message.

Disconnected when answered. Customer Care was on caller ID. Tried to call number back at least 20 times to aggravate the hell out of them. Got different messages: "call didn't go thru", "try again later", "press 1 to get on do not call list" (never press that). Stayed on til got busy signal or dial tone. Finally stopped getting anything.

received this call, let machine answer and they left no message

They called four times in a row and left a voicemail with nothing on it.

this number calls my cell phone often. doesn't say anything and hangs up.