Reality Trade sell our time, did not sell it, they would refund our money. Internet

Realtytrade.com said they would sell our time share in six months and if not they would return our money to us. After six months the time share was not sold and we sent them a letter asking for our money back. They said we could not have our money back. Stated they would give us another six months listing and after that six months if the time share do not sell they promised to send our money back. Again they did not sent the money back as promised. We sent them another letter and stated we are looking to sue them for our money. Realty trade called me and again stated there will be no refund given back. I would like to find other people that had the same experience and file a class action suite against Realty Trade with us. The people that work with this company are liars and thieves.  They stated they sent us an offer to my email (which I never got) and because they sent us an offer they would not refund our money. I never recieved an offer from them. I hope other people do not fall for this scam as we did. We are out over $800.00 and nothing to show for it. Buyers beware! We hope to find someone that can help us get our money back from this company.