Incorrect Bill Charged!!

I have a contract with Telkom for R449 that I have been paying for since June this year 2022. There's an activation fee that I had paid for (R99) once off. So now in September they sent me my August bill and I must pay them that activation fee again?? I sent an email telling them that this cannot be correct cause I paid this fee in June already. I was then told that I had purchased 2 Iphone 13s!!! How? When I cannot afford this?? I told them this is not correct there after I was told to submit documents such as an Affidavit, (stating I DID NOT ORDER ANY IPHONES) ID document etc. I did that as per the agent. But still the R99 was charged and I had told them if they added that R99 fee I WOULD NOT AFFORD IT. Now I have a R99 activation fee plus R147 bounce fee from my bank!! You guys need to refund me for both I pay for my monthly bill. Do you guys not do security checks before a person purchases a new contract? You are in competent honestly.