Absa account closure ****

This is the third time absa is pulling the same **** on me. I have a check account with absa that I have been trying to close for 4 months now. They just say pay the outstanding amount and we will close the account. I pay R600 still the account is still open and they are now saying I owe them R240 and must pay or they will blacklist me. I wanted to close the account bcos absa added insurance policies even though I insisted that no policy or value added accounts must be made. They protected their agents saying that I signed for the policy even though they just gave me the pad to sign saying that I'm signing for the account. All the while they know that they **********ly added the policy. Please help.