Disgusting telecommunication provider

I am totally disgusted by telkoms customer services. I don't know why and had so many accounts with a company that employs *********** staff. I had so far 3 mobiles contracts and my home internet and telephone line with them. I am ever so happy that I left them. Their staff has no way of speaking and engaging with consumers when i had issues i always spent more than an hour on the line of which most of the time spent on silent hold because staff did not know how to react. I suggest you train your staff on how to deal with difficult customers. Today on the 11/06/2020 I called up because I cancelled my account back on the 04/03/2020 but I'm still being billed i advised the staff that my account is still not cancelled, I advised the staff that I submitted another cancellation on 28/05/2020 and that I just received a bill to be paid on the 01/07/2020 which should not be as I originally cancelled all my services back on the 04/03/2020 I continued to pay as I was afraid that my credit scoring will be affected. I was on the line to the agent and a team leader for 2 hours then rudely the teamleader dropped the line with no return call. At first the agent refused to get a manager. My issue is still unresolved and I refuse to pay any Bill's I should receive a refund in actual fact. Telkom needs to train their staff on customer services I'm blady fix the messed up service that can't even cancel the services when requested. I checked reviews on other customers and the same result tried cancelling but still being billed for 7 or more months. I threatened to go to the telecommunication industry ombudsman and I think at this point I will because of the silent treatment and staff just dropping the line on you. They extremely rude, they can't handle pressure they just drop the line. If it was up to me they wouldn't even get a flipping red start rateing.