Telkom Poor Service

I have since purchased a online cellphone contract via online 4 weeks back telkom even went to an extend of deducting money in my account i have been calling them week in and out their agents they always give me attitude i even spoke to their team leader Nkosinathi he promised to fast track the matter as the error was in their side..last week i had a lady calling me promising me i will get the phone this week before Friday i have never heard from them even today..their service is soo bad even when you call them they take forever to pick up their phones i have spent R500 already trying to contact their call centre wereby i hold for 30 minutes to talk to a rude agent who just answers me the way they like end up taking my details promising me they will call me back but they never do i dont know where to complain anymore because i feel like telkom does not take their customers serious they undermine their customers i have to to wait 4 to 5 weeks just to get them to deliver the phone to me???thats poor service right there