My first problem with a credit car on the Internet happened 15 years ago. I purchased something and was billed 3 times for the same amount.
The folks at my bank investigated the "deal" and showed me a letter from the payment check-out facilitator that basically said I should be quiet about it or they would blacklist my name. Suffice to say I live in Europe and that the corporation in question was forbidden to deal with credit cards from my country and later with any country in Europe!
I never ever again used a credit card!
I use a free service created by the banks in my country to issue credit cards numbers valid for one transaction with buying limits imposed by the client.
And I always carry cash.
h.udo