Check out Privacy.com, they let you make virtual cards that you can limit or cancel whenever if things get fishy. I had to use this recently with a merchant who

Check out Privacy.com, they let you make virtual cards that you can limit or cancel whenever if things get fishy. I had to use this recently with a merchant who, after being unable to sell from their e-store on weekends left me wondering if I was going to be charged for this unprocessed order or not. The person I spoke to at the business had a 'gotcha' flair to their response about this, so I just cancelled the number before the conversation was over.