Vakıfbank Blocked My Funds and Refuses to Clear My Credit Card Payment

I had a few days of delay in my credit card payment. After receiving a notification about this, I sold shares from my investment/stock account at VakıfBank for an amount exceeding my credit card payment. This amount became withdrawable after two business days, but when I tried to transfer it to my main account, I received a message stating, "Your investment account is blocked." Once this amount was transferred to my main account, my credit card payment would have been made automatically as per my standing instructions. When I explained this situation via phone banking, I was told, "Contact the branch to have your block lifted." However, when I visited the branch, they said, "We cannot lift the block; pay your credit card first, and then the block will be lifted." My funds are already in my investment account as cash. When I asked them to deduct the payment amount from this balance, lift the block, and release my money, they repeated that there was nothing they could do and insisted that I pay my credit card. Meanwhile, the cash in my investment account remains blocked, and I cannot pay my card. VakıfBank isn’t deducting the payment themselves and instead asks me to find additional funds to pay. How does this make any sense? Why should I go into debt again for your convenience? My credit card limit is high, so the payment is substantial. If I could have paid it directly, I would have. Either release the funds in my investment account, deduct the payment automatically when they reach my main account, or directly clear the payment and lift the block so I can use my money. Because of this unreasonable policy, as soon as the block is lifted, I will withdraw all my money from your bank and cancel my credit card. Continuing with a bank that operates in this way feels like a punishment to me.