Billed for a product that was never installed

I app**** for a fixed ADSL line last year June. After waiting almost 2 months for them to come and do the installation, i cancelled the contract with them. NOW, I'm being billed for a product that was never installed and that was cancelled by myself after having to wit for months for them t o come and install the product.

Telkom is useless and the call center agents are not helpful at all and very rude. I have never before experienced such horrible service!! I'm utterly disgusted in Telkom.