Telkom billing me double and cannot speak to an agent

I have been using Telkom for more than 5 years now and have never had any bad experiences. However it’s been 3 months now that I have been paying double amount for my contract. Trying to speak to an agent at Telkom about my billing issues has been the worst experience. I have not been able to reach out to them. I have called every Telkom number and customer service. I even went personally to the Telkom store and they promised me one of their agents would call me. How difficult is it to just consult and speak to an agent to help me understand why they are billing me double. Now I’m trying to cancel the contract and it seems impossible. I keep calling the 081 180 number but I’m just wasting my time because it’s been months now and I cannot get a hold of any of the consultants to help me. It’s so easy to get anything on contract with Telkom but now that problems have come up, it’s difficult to get help from them :(