Bad service

Why does African Bank debit my account 2 times in one month. I hate this especially during tough times like this and this is the second time they are debiting my account 2 times now. They have literally no authority to debit my account the second time but yet they do. Then they promise to refund my money back to me then they conconct a bs story about why they cannot refund and all they do is apologize that's all and not come up with a solution or say that they won't tell me they will skip a payment given the double debit and one cannot reverse the debit order either. African bank better come back to me with a solution or else I will be taking matters further. This is ridiculous and pathetic that they are doing this now again!!!!!!!!