I traded 2 btc on the quarterly contract (expires in about 70 days) at 20x. Closed the position with 0.03 btc profit, but now Okcoin is holding 0.97 btc in my futures account, which cannot be transfered to my spot account or even traded with. It is simply locked and not usable for the next 70 days until the contract expires. I contacted them multiple times regarding this, but they say that its 'regulations'.

Why would anyone in their right mind trade with okcoin if they routinely freeze your funds until the contract expires? Is this normal for okcoin or am I being scammed?