Unauthorised debit order / *******ly debit order

I’m highly disgusted how Netstar just sends me an invoice on 30.12.2024 & *******ly debits my bank account on 31.12.2024 without my permission. When I bought my VW 3 years ago & Netstar was included, now that the “contract has come to an end without my knowledge I get a invoice for something I didn’t agree to pay for extra. Netstar didn’t even have the decency to give me a call last month to notify me that I’d have to pay from my own pocket if I wish to continue with there service, instead they send me a invoice & debit my account the next day without my permission. I’ve tried calling them over two days but no one was able to help me, so instead they JUST debit my account.I have not signed any contact or paperwork for them to debit my account. This is completely ******* & unacceptable. I’ve called them a numerous of times trying to solve this but they just debit my account without my permission.