Cancelling a Telkom line is impossible,

Surely there must be a legal obligation for a company to enable the cancellation of a contract. Having had a difficulty for well over a year, with many mails, they have still not done it and are now suing as I stopped paying the account. Customer service is pathetic and deliberately cumbersome so the public have to battle to get anything done. They should be brought into line, its unacceptable.