Coinabul has done good business with me, slow but reliable. I don't know who has been complaining lately, but most of them are of a similar nature. It sounds more like you are trying to scam them than them trying to scam you. Here is what I hear from your complaint:
"I changed my mind and Coinabul refuses to lose money refunding me in BTC so they are scamming me."
I can tell you didn't read their schedule on their website as to how their process works.
I can tell you're new to this board, but I wonder if your account is a sock puppet for one of the other people that tried to slander Coinabul.
In my opinion, they offered to work with you on a fair deal and you decided to try to gouge them for more BTC.
Thralen
I agreed with the quoted post. My experience has been the same with coinabul. The fault here is with the buying 'changing his mind' - coinabul is being very gracious even offering the OP the buyback option, if I had been the seller I would have shipped the gold and simply told the buying 'I'm sorry, it's already been shipped'