I cant wait for my telkom contract to end!!

I have been a telkom client for 8 years but the last 2 years has been a nightmare. I have 2 cellphones, a fixed line wifi account and a laptop account. My invoices are always different amounts, never what i signed a contract for. Ive been paying way over what I agreed for. When I go to the branch to clarify, they refer me to the call centre, when I call the call centre they refer me to the branch. During lockdown Telkom could not be bothered that the country was on lockdown. They cut all my devices and I had no way of contacting anyone or keeping my business afloat. I then paid the account in full on the 18th June 2020 and I was then debited on the 30th June 2020 and again on tbe 4th July. My account was suspended again on the 6th July because funds had not reflected on their side even though they took money 4 times. This obviously affected my business as i couldn't received or make any calls or use my banking app because my number was non exsistant. After updating their system, on the 8th July payment was recieved and my line was reconnected on the 10th July.. On the 14th July 20204 days later, they debited me again for the amount that was only due on 30th July 2020... Whenever I call, I cant get any response from them, i insist on speaking to a manager but my call just gets cuts.. They are of no help and then inconvenience my life.