Highly disappointed and frustrated

Firstly after making it clear that I don't want to a new contract and while not in the right frame of mind I get put into new a 2 year contract. When I saw i was put into a new contract I also saw the R600 airtime I had was gone. They said it was an extension of my existing contract however it wasn't as i was on a top up and then got put onto a normal contract.. so new. Contacted them about my missing airtime I was told I would get a call back.. a week later I call again and speak to Zandelee who reassured me I wasn't supposed to lose airtime and she would airtime it out. They couldn't access my information due to system issues so I emailed her the same day to prove what had been loaded and used before I lost my airtime. They also granted me a contract without asking about my employment and I have just been retrenched. When I called on the 19th December I was told that Zandelee had gone on leave and would only be back in January and no one else can deal with it. I still have not heard any feedback and am still missing my R600 airtime. Worst experience ever!