I called the card company and they cancelled the transaction from my card immediately, but I don't know how they handled anything about the theft.

It was for $1. The person who took the call said the same thing and was very blasé about it. I was somewhat peeved. Several days later I got a call from Discover about fraud. Same merchant, larger amount, plus another merchant. They had to send me a new card.

I stopped using Discover as my primary card.

(Mine was a clothing store and then a printer ink store.)

Common tactic for ID thieves is to make small purchases as a "test" before using it to make bigger ones.

I'm surprised the rep didn't immediately deactivate your card & issue a new one.

It automatically comes off after 10 days,
Cancel it immediately

for around $200 total that also included a foreign transaction fee. I haven't been in Europe since 1970.
When I called, they told me they would investigate, and it may take two billing cycles to complete which it
did and everything was taken care of. I did what a friend of mine told me he did. I went on the Bank Website
settings and set it up where I get an e-mail anytime a charge of more than $10 is made on my card and anytime
there 3 or more charges in one day. I had made a trip to Niagra Falls and Toronto a few days before, I think
since I was in crowds of people from all over the world that is where it happened.