Telkom service stinks!!!

I cancelled my Telkom contract in December 2019, I sent an email in February 2020 as I was still being debited yet my internet services stopped on the 2nd of February, I emailed Telkom enquiring about the additional debit order and requested a refund and all they rep**** was your contract has now successfully been cancelled ignoring the fact that I already had proof of cancellation with reference numbers from December 2019, they also ignored my question about the additional debit order and since have ignored my emails for almost a week now. I was emailed by Muntu Sogobile (Mobile Retentions Escalati) the service has been absolutely pathetic, I have put a stop on any further debit orders as I’m afraid I’ll be debited again.