Poor service, you'll pay for services you're locked out of

If you intend to boost your credit score, stay away from Telkom. You'll pay for the service you're not receiving, your billing queries won't be resolved, your account will accumulate additional charges monthly which will add to the money you owe, they will debit lesser to continue milking you.

And regardless of how many months you've been calling to resolve the issue you won't be assisted.