Good day please assist me, last week or 2weeks back i complaint about cartrack and i received a call from one lady working at car track regarding cancelation she said she has canceled i nolonger have an account with cartrack

Good day please assist me, last week or 2weeks back i complaint about cartrack and i received a call from one lady working at car track regarding cancelation she said she has canceled i nolonger have an account with cartrack. But now i am being harassed by cartrack people telling me i owe them and they keep deducted money in my account everyday. To who and how do i report this too.