For any other service, I'd be upset if my bank did this, but Linode is quite literally the least secure paid service I've ever used. I've had multiple credit cards compromised as a direct result of multiple Linode hacks.
Set up a separate card number for each site, and that way I don't have to worry if one site is compromised.
Disclaimer: Not affiliated at all, just a very happy customer! :D
I maintain multiple cards with my bank to get a poor facsimile of this.
The worst incident in my opinion was in 2013. Credit card numbers and password hashes were compromised, and Linode actively denied it until the hackers literally showed proof (which was linked to on HN at the time iirc). I remember reading chat logs that painted Linode as extremely negligent towards security.
The last time Linode got hacked while I was still a customer, I learned about it on HN from a third party before Linode even publicly acknowledged the incident. I decided enough was enough, and switched to a less cost-effective provider with a better security track record.