WORST UPGRADE SERVICE YET

I have been trying to upgrade my contract for 3 weeks now without any success, Telkom send me a email to inform me that my contract is due for a upgrade I rep**** to the email for them to give me a call back. No call back as yet. I then tried phoning into 10213 to upgrade my contract after 40 minutes they eventually told me they will do the upgrade for me just to have an sms send to me 10 minutes later stating that there is no stock of the item I want to upgrade to and that the contract upgrade will not be processed. I then phoned back and spoke to a supervisor which informed me that if they do not have stock this week they will definitely give me a call next week to tell me if they received stock or what it going again. Again till date no call has been received. The Boksburg branch does not answer their phones any time of the day no matter how many times to try to phone. From the 17 th February when I started I have not receive any feed back from Telkom regarding my contract or the reason why a product that is advertised in their monthly pamphlet is not available for 3 weeks and no can source this for me or give me a simple phone call. I need this contract upgraded urgently as I use it for business.