SERVICE CENTRE UNRELIABLE

good day

I have always been with MTN for years and currently have 3 contracts. My complaint is the following: 1. I am trying to cancel one contract- No MTN shop is able to assist-You have to call 135 which an operator let you wait so long that when it is your turn the call is cut off-No follow up or return call as they do have your number on system when you call. 2. I am trying to cancel my insurance- Once again no MTN shop is able to assist- I called ********** 084- then option 2.. voice prompt you are 12 inline and will be assisted about 10 minutes. After the 10min holding on, you are 1st inline just for your call to be cut off. 3. I buy DATA bundle from my Capitec account which indicate 30days but 2 days after that my data expires.. Now no1 can tell me what is the problem. It's frustrating but when you apply for a contract or insurance you can go to any shop.