I changed my Google Fi regular payment method to my Amex Plat at the beginning of the month, before reading that Google Fi probably wouldn't be reimbursed. My monthly payment was charged on May 8 and the $20 credit on May 22.





There are no other charges or credits in this billing period (and no other wireless phone charges in recent years), so it's definitely a reimbursement of the Fi charge. I didn't contact Amex about this.