Unhappy with my service plan cancellation

I would like to register a complaint and let customers know about my experience in purchasing and cancelling a service plan. Upon the advise of the consultant I took a 60-month service plan. I have had the service plan for 14 months and did one service via the plan. I have sold my car and now the settlement figure given to me together with my premiums paid is more than the cost of my service. I am also unhappy because I asked the consultant about cancellations when I took up the policy and they said that it will not amount to much. The lack of transparency on these calculations and being inaccessible to the people doing these calculations is very frustrating. you can only speak to the customer service people who are the messengers.