They called me too. Several times , never answer

Called me today --- left empty voicemail.  Don't know who it is.

Call me twice today, maybe is a freaky collector expecting got money from tax refund. Don't answer

I called back after hours. Says it's ERC. Some type of debt collector. The choices are to pay your bill, ask for a paid in full receipt or tell them they have the wrong number. If they don't ever leave a message so how do you know who they are calling for? Must be a robo dialed call. Calls at least once a day. If I pick up they hang up. Have no idea who they are calling for. It's not me!!

This phone number is from a collection agency - I had a Sprint account that was delinquent. The collection agency is called ERC.