Suspended cellphone number but account fully paid

Telkom has sent a third party company to keep debiting my account over and over again and i am still sitting with a suspended account and on top of it they keep charging me for a contract that expired in December 2018, with a sim card that i have discarded. Telkom please look for new clients as i will never renew a contract with you, i have started by replacing the previous contract with Vodacom and as soon as the last contract expires, i will go to vodacom again. You are a **** ass company. I have taken you to the ombuds twice, this time i am seeking a harsher punishment for you that doesn't involve useless apologies and return of 1 month subscription back