No. Argent does not collect, store, or process your billing information in any way.
When you tap Add funds/Fund in the app, you are redirected to one of our fiat-to-crypto partner providers (like Ramp, Topper, or MoonPay). From that point on, you are using their system, not Argent’s.
If you want to change or remove your billing details, you will need to contact the provider you used directly.