You haven't been scammed, you've simply been stupid. Are you aware of how most merchants accept BTC? They never touch the BTC itself, it is immediately sold and they receive USD or Euros or whatever. Therefore they don't have the BTC immediately on hand to refund.

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