Anyone else had any luck with the $15 wireless credits on select business cards? I used my card to prepay google fi two months in a row and it shows as google fi on my statement but no credit. This is not wholly surprising as google fi has always been difficult with amex credits. The surprising thing is how much Amex agents are refusing to manually credit:

"Nikki - 12:03 AM Google Fi (only merchant number 4045974169 will receive wireless credits)
Nikki - 12:03 AM however the charge you made is with 1047161427 merchant number "

My prepayment towards my google fi bill definitely qualifies according to the terms of the offer. Twice now, agents have pushed back hard against manually crediting. I feel like Amex customer service has really gone downhill recently. They have escalated a complaint but I'm not holding my breath.