Upgrade allocated to wrong number

I went to get one of my numbers upgraded and they did an upgrade on both but only gave me one phone, the system corrected it but the upgrade was processed on the wrong number. I wanted it changed and after being promised to be contacted about this I was not called back, after 2 weeks I phoned again and said I sommer want to cancel both my contracts and they must come and fetch the phone. I was told I would be contacted and still no call received. <br> <br> Due to this I couldn't give my month notice beginning Aug as they upgraded the number I wanted to cancel. Every time I can upgrade I have issues. Last upgrade was also done wrong and I was promised a refund I am still waiting.<br> <br> I want to cancel both my contracts and move away from Cell C now so can someone please contact me that can help me and not tell me to go to the branch were I did the upgrade as you made the mistake so you must sort it out why should I now go and stand in ques for hours to get it sorted out if it wasn't my error??!!<br>