When the machine picked up caller hung up.

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This is a scam not a real company... they pretend that you owe them money on some unpaid bill, they also make it look like they represent your cell provider... total scam all bs something needs to be done about them... dont tell them anything about your or your bills or they will just keep trying to scam you... report them to your phone company or the police... bad people... sad but true in this world