I sold them ten $100 gift cards which they received on June 30th (sent by certified mail so I would have proof of receipt). I was told I would get a check within 10 days. After 10 days with no check, I called to be told they were having technical difficulties and couldn't process checks so they asked for my banking information and said that I would get an ACH deposit in 2-3 days. After 4 days with no ACH deposit, I called again to be told they were having more technical difficulties and they couldn't process any payments (either by check or ACH deposit for 2-3 weeks). It has been 3 and 1/2 weeks with no payment. Now whenever I try to call, it just rings and rings before going to voicemail. They have not responded to any of my emails or returned any of my voicemails. I only gave them a 1 star rating because I couldn't give them a no star rating. DO NOT USE GCS!