I'd be contacting my Visa card customer services. There's a payment been taken from your account that you know nothing about. Ask them for full details and, if youo're not happy, tell them you want a full refund.
We did this some years ago when a small (about £5) payment had been taken notionally by an estate agent.(They don't deal in such trivial amounts). It took a little while but we got our money back.
Sometimes people who have got hold of your card details will try making a small purchase and, if you don't spot it, they'll make a bigger one later.