I got charged with 52.49$ and I never used avast before

A few hours ago I got a message from the bank it was “DRI*AVAST SOFTWARE” it was 52.49 usd and this is the second time the first charge was a month ago and it was rejected because I didn’t have enough money in my account .
Who should I contact or what should I do ?

Have a look at this thread:
https://forum.avast.com/index.php?topic=220340.0

There is advice there how to contact Avast for refund.

How did avast get your credit card number ?

I have no idea

Don’t third party organizations handle this for avast? Like Digital River?

Have you used the credit card for purchase or trial of any software?

See this thread:
https://forum.avast.com/index.php?topic=220886.0