You can also consider adding something like the below to your FAQ or About pages:
Q: How does [YOUR COMPANY NAME] process credit card transactions?
A: We work with 360 Payments to process credit card transactions quickly and securely. To learn more about 360 Payments, visit their website at https://www.360payments.com.
Q: Is my credit card information secure?
A: Yes. [YOUR COMPANY NAME] does not store or save your credit card data on our servers or in our databases. Your information is transmitted directly to the card network for processing. If you have questions about this process, please contact our credit card processor 360 Payments at https://www.360payments.com/contact.
If you have questions, please email us at firstname.lastname@example.org.