Poor customer service

Pathetic customer service from Telkoms Call center I call on numerous occasions from the 11.05.2018 to put on a spend limit on my account but none of the agents where able to do so. On the the 28.05.2018 I check my mobile app before I go to bed it showed that my current usage is R39 when I woke up the next morning it showed that my usage is R500. So I decided to phone the call center and Noone can assist me. Today 30.05.2018 I called I spoke to someone they advised they cannot add a spend limit and cannot tell me why my bill ran up to R500 I asked for a manager the call was dropped on me. I called a 2nd time spoke to a nice lady she actually put on a spend limit for me I got a sms stating that it has been changed. The I asked her about the bill as I called numerous times to put on a spend limit and was not done and if it was done the first time the bill wouldnt have Reached R500 so I asked how can we work towards this balance as I have numerous products with Telkom and she advised it has been used and nothing can be done. So I asked to speak to a manager. So this person comes on the line only to find out she is not the manager she is a 2IC in the team. I asked to speak to a manager and advised the the manager is in a meeting adviser the 2IC I will hold on. I was on the line for 1hr and 15 minutes. The 2IC comes on the line and advised if I carry on holding the line will be disconnected I asked why? No answer was given so I said the line will only disconnect if they release the call. She told me to carry on holding and there 5 minutes later. The call disconnected. How pathetic is this service that we as customers receive there is no records that show that I called in prior to today. I'm utterly disgusted