EXPIRY OF MY SERVICE CONTRACT

I bought a service plan of my car from the above company at first for 03 consecutive services starting from 15.000, 30.000 and 45.000 milleages. I was never given documentation which could explain and clarify the content of my plan. I was then informed just before the milleage of my car could reach 45.000 which was going to be the end of my service plan that my service plan was coming to an end, therefore asked if I wanted to extend the service. I agreed on the extension of the plan which was going to start at 60.000, 75.000 and 90.000. I took my car for service on the 28/04/2015 for the last service and I got a shock of my life when I was asked by the service adviser of CMH GM if I was going to use the card or cash to pay. I said that no ways ' I still have a plan to pay for this service\ The adviser told me that when he called Innovation Group they told him that the plan expired on the 01/12/2014. I then asked him to call them again so as to get it from them. After a long argument Mr MPHANDE John promised to investigate the matter but never came back to me and when I called him I was made to hold on to the phone for more than 45 minutes