Telkom is a no-go

I am a Telkom mobile customer.I started my first contract with them a litte over 2 years ago.My contract was due last year November 2015 and I decided to remain with Telkom and renewed my contract.Since then I have had nothing but troubles to get my statements in order as data bundles were added,then they refunded me as it was wrong,but only refunded me a small amount.I then had to go through the trouble of correcting them again.Then they cut off my internet data bundle completely.It is now 3 months and I am still struggling to get my upgrade in order,to the point where Telkom now owes me money and I have a phone with no data to use.I have phoned and delt with operators,then insisted on supervisors,then insisted on managers all of whom have had the same don't care attitude.Telkom staff does not have a clue about their products and in some cases U end up telling them about their own products.One thing is for certain,if they say they will get back to U,they never will(All staff).I am still struggling.I would not wish this service apon my greatest enemy,but would rather warn people outside that Telkom is a NO-GO.