PicsArt Free Trial Led to Unexpected Charges

I signed up for PicsArt's annual subscription in order to use the three-day free trial. However, I later noticed that I was charged twice in July without providing any authorization or receiving any notification. I was charged approximately $2 on July 2 and another approximately $2 on July 10, for a total of approximately $3.

As soon as I noticed the charges, I canceled the subscription. However, I do not accept these charges. I signed up for the service believing that I was using the free trial, and being charged in this way has caused me significant inconvenience.

I am requesting a full refund of the two payments, which I believe were charged unfairly.