Martin Wireless LLC review: cell phone purchase/selling

Sent and sold cell phones back in FEBRUARY to Martin Wireless and have still not received payment from them. They never pick up phone calls and return emails weeks later. DO NOT TRUST THIS BUSINESS! They said they lost our cell phones but that they would still send us a check. However we have still NOT received anything from them, and that was 2 weeks ago. Ryan Martin and Nicholas Irvin are the "owners" of the company. Please do not trust them/do business with these people.