A few people have been scammed (probably by a greedy employee) but overall they run a legit business. My only transaction with them went smooth. Honestly, I'd say you have a greater chance of getting scammed here on sythe rather than from gold4rs.
To resolve your issue however, keep talking to them and act nicer and see if they'll come around. If they don't, then wait a few weeks, check their 'account sale' page and see if your account has been taken off the advertized accounts (meaning it's been sold). Then go back to the online chat and threaten to recover the account thereby making their buyer charge back from gold4rs.
Basically, just wait until they've sold the account, then you'll have plenty of leverage.