I made a purchase last week for a GC which totalled to about 48.26 after the non membership fee. I was fine with it since I was going to split the charge across two cards. The mistake I did was split it as 20$ on my BlueSky and the rest 28.26 on my PRG. But the strange thing is that when the order got shipped the total order amount dropped to 47.66 as they excluded the sales tax from the initial amount which was 0.60 and this amount was reduced from my BlueSky making it 19.40$ on BlueSky and 28.26 PRG. Previously I got the Congrats you have used the AMEX offer email but the credit did not get posted still which is more than a week later. I got my credit on PRG two days later. Anyone else face this strange issue. Is there anything I can do now other than placing a new separate order for 20$?