Billed for no reason.

I woke up to a message that I was billed 49,99€ (why?) and after I turned on my PC and checked who paypal it was an avast payment.

I have the free trial version, the cleanup premium thing is on free trial as well, it runs off in 3 days. Why was I charged and what for?
Nothing changed in my avast program, I was just billed and received nothing? Am I supposed to dispute that on paypal or why? I don’t like getting billed for no reason and getting nothing in return.

Contact Support https://support.avast.com/contact