Ridicules

I got this maintenance plan 2 years back when I bought my car, I never claimed a sent from them and 2 weeks back, they phoned me up to extend the policy, I agreed. this was only an extension on the old policy. Month end they deducted 2 premiums, the old and for the extended plan. I phoned them and they said that the new policy must be in place 3 months before the old policy expires to prevent the 3-month waiting period. I do understand the waiting period if you are a new customer, but I had this policy for 2 years without any claims, ridiculous to pay 2 instalments for the same policy for 3 months. I'm not a new customer. The agent said clearly that the new policy is only an extension on the old policy.