Dissappointed by management

I called cellc customer service in June to request for a contract cancelation and serve my notice of 30days. I then again called in, in July only to find out my notice was never placed. I spoke to manager Brian tunyiswa. He assured me that my number contract has been cancelled by him with immediate effect and my number will be closed..again I had to drive to cellc to check my bill for my second contract, when I get to cellc they advise its still not sorted even though the old number has been cancelled. I was then referred to speak to that manager that helped me. I get through to him (Brain tunyiswa) he then tells me that he is to attend a urgent meeting so I remind him who I am and how he helped me. At the time. He then assures me that I will get a call from him around 12. Right now it's 19:02 date 12/08/2019 and I still haven't recieved any call from him and right now I am really ****ed off because my other router is not working because it's not paid for only because my bill is still saying R500 instead of R199. I was going to carry on with my second router on a month to month basis because it expires in August but with all the ups and down cellc is giving me and no one to replace the petrol I keep using to drive up and down to cellc trying to get this resolved. It's been a really tough time trying to get this resolved and the people we rely on are doing anything bout it