IM LITERALLY WITH FNB BY FORCE

On the 4th of June after i discovered that unauthorized debit orders have been going off my FNB Business account i decided to contact them via their Chat Box, unfortunately i was told that all the amounts i wanted reversed could not be reserved i needed to contact my service providers, i went ahead and gave an instruction to close this account. 2 months later the account is still open. more unauthorized debit orders went off and i still cannot reverse them. so I've obviously been charged fees for the account for these 2 months, I've wasted money on non-returnable debit orders, and the account is still open. I'm not sure if I'm being indirectly forced to stay with a bank that isn't doing anything i instruct it to do or if there's no turning back once you are with FNB it should be evident on my account activity that i am gradually moving away from this bank but now there's this issue of them not closing my account and me losing money because of that.