Support time issue

How long does it really take Gameflip to contact about an issue? The email says 2 to 4 business days, but I am waiting for their response from one ticket that was over 3 weeks ago and I just made a new one for a different issue I had with a seller. It use to be within hours of having a dispute. Should I not use this site any more because of the lack of support from Gameflip?

Hey, unfortunately some issues are taking longer to be replied.

Please, send me via PM your ticket number so I can help you further.