Billed for contract I did not apply for

I am being billed for a Telkom contract that I have not app**** for? App**** for a Fiber contract, instead they activated a ADSL contract? I was on ADSL, did not need a new ADSL contract. Want Fiber! However, it is impossible to raise a dispute on it, or get some-one prepared to address it. Numerous attempts to raise it via 10213 (sales) or 10210 (services) they plead they don't know what to do. Used email channel. No response from Telkom.