Innovation Group they are bullies

I had a policy with innovation group and my policy started in April 2017 and I was told that the policy was for 24 months after 24th payment I called and they said no my payment term is 30 month and the only prove that was available is the voice recording when I accepted the policy over the phone the payment term of 30 months was not mentioned on any other document including the policy document that Innovation group sent me. Okay that was fine since it is a big coperate I could not win the case as I was powerless. Now after 30 payments they are still debiting my account and when i try to call they say i have two months remaining term which is just crazy and day light *******. I feel like I have been bul**** just because they are a big corparate and they do whatever they want the only respect you get is when you are taking a policy after that they treat you like you are nothing. BULLIES INDEED