Sim swop not done for months

I have 6 contracts with cell C ancer.Been with them 12 yrs plus.Three mnths ago i reported one cell c sim carddamaged.I paid all six contracts diligently.cannot use sim or contract.Dec 2015 another sim on a different contract damaged.Since then i phoned numerous times.Call centre treat me as an idiot,cannot solve query,or do not want to help.Self service even worse!Now if two contract are up to date with payments,neither work because of cell c incompetence,is cell c refunding me on these two contracts ?To phone and be on the line with a person/persons for 46 minutes at a time and get cut off is no joke and a waste of my time and money.inthe mean time two contracts cannot be used yet i am billed .pathetic