Worst and disgusting service from such a big company Cell c

I bought a new device on the 1st of March and it is a dual Sim and it is under cellc l then called cellc to have network unblock done for me and they advised me that in order for the process to be done they would have to deduct R150 from my account of which I didn't have a problem with that. I was told the process would take up to 48 hours to be done. After 48 hours I called to follow up with my case only to be told that the consultant who assisted me did not take all relevant information so l needed to redo the entire process again l did not have a problem with that l did it again. From that time I called the call center for more than 20 times and sent several emails and still to date its not resolved. I have tried calling again the call center and being told that they is nothing relating to my case. I am so disappointed with cell C such a big company that gives people such bad service and experience. When I called the call center l was told a supervisor by the name of Mthoko Ngobese would call me back up to now l haven't received a call and the other consultant had the nerve of dropping the call on my ear. It's been 2 months and I have not gotten help. If you can't help me with network Unblocking refund me my R150 and not offer services that you can't deliver.