SIM unable to receive Telkom calls

I purchased an MTN prepaid SIM card from CNA Centurion. Had it activated and then discovered that the number *** is not recognised by Telkom as a valid number so the SIM is unable to receive calls from a Telkom landline. <br> I am unable to speak to anybody at the MTN call centre because they have set up their call centre in such a manner that no matter how long you wait, which options you choose you never get to speak to a human. It is a very clever tactic on their part to avoid ever having to attend to a real problem.