FNB AND TELKOM IN KAHOOTS

In Feb I ordered a sim card from Telkom @ R99 per month - all was done online as I do not have transport to go to a telkom shop. I asked them to port my number. After the sim was delivered I waited 24 hours and still the sim was not working. I phoned them and they said the sim was not setup and I had to go into a branch to port my number to Telkom. I then told them to come and collect the sim - as this is not what I ordered. never heard from them again until lockdown they started deducting R514 from my account. I disputed the debit order and they kept on deducting this obsurd amount which does not even make sense. This is the 2nd month Telkom deducts R110 on my account - along with my service fees. I have queried this and the lady I spoke to just told me TELKOM DOES WHATEVER THEY WANT. You cant stop this service fee, you cant stop their debit orders - they will just keep on changing their references and or amount to get their money. I was actually advised the best option is to close my account. When you call FNB they simply cant reverse the debit order - they cant help you in the branch and refer you from chat to phone and vice versa. How can FNB just allow telkom to deduct service fees from your account - which cant be reversed??