[unluky]

I'm old enough that I remember when CC companies would "punish" you for doing this when they were new. They could cancel your contract. I worked at a place back in the day that did this and due to the threats - changed it to a "cash discount" to get around the rules. LOL

Now that they firmly have everyone on the CC and no cash plan - they probably don't care anymore. At the time they didn't want using a CC to be a negative experience.