Extremely bad service

This is a very long story but it boils down to customer service.

I had been a very happy customer with Cell C in the entire 4years i was with them. When my contract ended with them i called 2months before the end of my contract to cancel and was told i may only call 1 month before my contract ended which i did on the 1st of August 2017 and i told them over the phone that i would not like to renew my contracts as Cell C did not have any good deals i wanted. They confirmed my details and then told me that both my lines would be cancelled as requested and that i will pay my last installment on the end of September 2017. On the 1st of september i noticed that the 1 line had switched to pay as you go but my other line was still working as normal which it was not supposed to. So i called again and explained that my phone was never cancelled as requested and the person told me that i only cancelled one of my lines to which i responded that they should go and listen to the voice recordings where she will hear that i clearly cancelled both. She did this and said that it was not my fault and that they will cancel the line immediately. After this my phone was still working and because of the inconvenience and mistake of Cell C i could not switch service providers. I used the phone for the month of September and on the 29th September i signed up with another service provider who said my number was held hostage by Cell C so i could not port. I called cell c and was very angry. I got them to finally put me through to a senior manager who quickly released my number and told me that everything was sorted and assured me that i would not be billed at the end of October 2017 for any usage incurred in September as it was Cell C fault. I switched to another service provider and low and behold I was charged at the end of October with a debit order. I tried to get hold of this manager again and when i finally did he didnt want to give me his direct contact details and assured me that he would sort this matter out for me. He always talks in circles and always contradicts himself. They always pass you over to someone else although i have explicitly told this manager that i will only be dealing with him. I had to follow up the enture time and they finally opened a case to investigate my case with all my voice recordings. The outcome was relayed to me by an agent by an agent that told me that the outcome of my investigation was that i had to get a refund but i asked her to repeat that on email and she didnt. Apparently an agent was to phone me and i have yet to receive a call back or my refund. I have been passed along by all and any agent and even this manager is ignoring my emails which i send ever hour since yesterday. Dont use Cell C as they will ***** your money when you are no longer with them. Their staff are poorly trained and their customer service is non existant. The agents cannot resolve your issues and you have to phone constantly and explain ypur entire story every time you call. I have been waiting more than a month and called out more money on airtime than they owe me just trying to get my money back. I urge anyone and everyone to stear clear of signing up with Cell C