no service what so ever

My telkom mobile sim card suddenly stopped working sometime between Tuesday evening and Wednesday morning. I contact 081180 and they informed me that perhaps my sim card is faulty and that I should buy a new sim card and arrange for a sim swop. I done that and contacted telkom mobile to do the sim swop. Eversince I contacted them yesterday up to now, nobody can help me. I spoke to an agent which told me he will esculated to his manager and that the manager will give me a call. That was Wednesday around 14h00. Nobody called. phoned again at 19h30 to follow up, same thing, they can't help they will esculate to the manager. Still I have no phone number that is working. Today I phone again, spoke to Londwaba, after 22 minutes of holding because he needs to speak to his manager, he cut me off. I phoned again spoke to Cindy. She said hold on she must speak to her manager. I held on for an hour (the cellphone then barred my call) What must a person do to get any assistance!!!