Change payment date, I’m being chased over $6.00 in POS DENIAL NFS FEE!! If it doesn’t stop 🛑 I will delete my account

This is primarily a user-to-user support forum; other Apple users like you. The following may help: Contact - Official Apple Support

Apple Card payment is due at the end of the month.

Other payments are dictated by the date in which you make a purchase or the date on which you subscribe. Eg. A subscription that started on the 14th of the month will be billed on the 14th of each subsequent month until cancelled.