Tracker cancellation fee

I called Tracker today to cancel my service as my car is parked due to mechanical problems and I no longer want it and I was told that I would have to pay a cancellation fee of R1200 as I was ending my 36 month contract early.

I do not remember agreeing 36 month contract and I did not physically sign to agree either. I have also never received a contract from Tracker.

I will not accept this penalty and I demand to have a verbal recording sent to me proving that I agreed to a 36 month contract. Tracker is not honest with its clients.