How do I turn off the auto-renewal feature - set to be charged 39.399 just paid 49.99 a few days ago via auto-renewal already - will be firced ti contest payment otherwise :-\
all AV vendors have a FAQ section https://support.avast.com/support/home search and you shall find 
Orders & Renewals - FAQ https://www.avast.com/faq.php?article=AVKB24#artTitle
Hi,
Your auto-renewal for the second subscription (Internet Security trial) is cancelled.