Cartrack deducting double

I bought a car from Avis in East London in May 2024 after I traded in the one I had, I bought a Suzuki swift which had an already fitted tracking device, ive been paying for this since then. Now on the 24 July 2026 I was involved in a car accident and the was declared a write off, I contacted cartrack telling them of what happened, they told me I need to fill in a cancellation form and pay R203 which is what I've been paying on monthly basis and a R59 re submission fee which I didn't understand, I filled the form and was told it will take 20 days for them to cancel the subscription, and the debit order of R263 went off from my fnb account, and now there was another debit order of R160 which I reversed because I knew nothing about it. Now they keep calling me wanting this R160, I asked them what it is for because I paid all the monies I was told to pay, they said it's my monthly subscription, I asked them which one because I already paid the R263 , and my monthly subscription is not R160 , and their debit order goes off on the 15th of every month for the next month, so I don't understand, I no longer own the car, I deregistered it on the 11 August and they debited the August money