*****ulent by Netstar Car track

I had a contract with Netstar since 2010, in January 2023 when it was due for renewal I then cancelled my contract with them, over the phone and I sent them an email, I told them I no longer have a car. They have been debiting my account, sending me emails but ignoring my emails that I have cancelled the contract, everytime I talk to them on the phone they say contract is cancel but every month they debit my money.