Cellphone contract

I need assistance, I have been going back and forth trying to resolve my Telkom cellphone contract.

1. I cancelled my contract 2 months before the end of contract and I was told the settlement amount would be R600 and something, at the end of the month they deducted R900 and something, I went to their store in cavendish to dispute that and I was told that they added cancellation fee which they never mentioned when I was there asking them what is the settlement amount. At the store they told me I need to speak to the billing department, they logged a call and told me I will receive a call in the next 15 minutes they don't take long to reply (***5). I have never received a call from them, I went beck to them again they told me the same thing that they will log a call to the billing department they will give me a call and I never received a call till today. I went to one of their stores in Waterfront and they told me they can't help me I should go back to cavendish store. I called the call center billing department yesterday they said they can't help me I should go to the store. I went to the store they said they say the same thing that billing department will call me. This has to be resolved and I don't know who can help me when they all cannot help me.

2. 2nd issue is that when I asked them to cancel my contract they ceased the phone numbers instead of putting them to prepaid number as they did with my previous contract. When they ceased my contact numbers I had data with both the phones and that was gone It took them 3 weeks to reinstate my contact numbers and I had to fight for my data which was ceased (***6) finally they reinstated my data in one sim card the other one I am still waiting I don't know how far they are with the investigation.

I just need help to resolve these matters, I have been a loyal customer with Telkom for many years. I am really disappointed with this service I am currently experiencing.