As a Company, we want to provide the most secure and advanced technical solution not only regarding Google Ads, but payments as well.
We work closely with a financial giant Stripe which proved their worth many times. We does not store any sensitive informations about you or your bank account / cards.
Right after, you set up your account, and billing information, Stripe will send us a token, which will be used in the future to connect with them, to authorize any of your transactions with us.
Look, who is using Stripe for payments as well:
If you want to know more about the topic, go to the: https://stripe.com/en-pl/about