They do not want to give you your profits

I deposited funds into my account, in a weeks time i had made enough profit so now i want to withdraw, my withdrawal request keeps getting canceled i email them they tell me since i had deposited with bitcoin in the past which was around April i have to with draw a certain amount of funds using bitcoin, i tell them i no longer use bitcoins and my bitcoin account has been terminated, they requested proof and said they would give me my funds if i provided proof, i provide proof now they want me to open a new bitcoin acc note: the commisions are extreme when withdrawing through bitcoin now i cannot receive my funds any more