Unsubscriptions trial version

Hello, i have purchase the free trial version of avast premium and its shows me that the renewal its gone be on 7days…
But i dont want to buy it…i wanna cancel the trial version and i dont find a option to do that… Please help…

https://support.avast.com/article/24/ (Orders/Subscriptions/Refunds)

i try all this… he need recent order confirmation email or ID purshace… (i dont have something like those because its a trial version)

Try this. Contact Sales: https://support.avast.com/en-us/contact/sales/
If you don’t have an order number use 00000000 then explain your problem.