Maybe use privacy.com instead (they also have an app), they can generate virtual credit cards and you can set limit is (one time payment, or monthly $10 only, etc). It’s great if you need to cancel something or if they try to charge you extra. Saved me $150 when boost tried to charge me 1 year after I bought a phone from them!

It’s also great for predatory services like GYM membership that you can’t cancel.