Unhealthy bussiness and rude customer services

I took insurance with car track on August already the have debited my account for times and we are in October,On the day I took cover with them I stated that I am getting paid on the 15th of every month but they they just decided to debit my account on every 1st of every month and also on the 15th I tried so many times to resolve this matter nobody is willing to help me I called every on the 15th and 1st to rsolve trhis matter but not winning,they debited my account twicw this october and send me sms that am still outstanding in only four moths with them,funny part their contract is not fair that is for 3 yeras binding irrrepective of their unproffesional on manner in wich they resolving cases, please I need help