Lol, I visited uob.com.sg/onetncs for the UOB One Card T&C for details (as stated in this message) but dun see where state/imply grab topup is excluded from the quarterly rebate
if u look at the tnc again... the exclusion table... it (top up grab wallet) can fit into several categories of the MCC such as 6050, 6529, 6530, etc... we dunno how UOB decides to categorise it.
else, there's this overarching statement:
(h) any other transactions as may be prescribed by the Bank from time to time.
so, it's pointless to debate over whether it is still included for card rebate or not as the main page clearly stated the exclusion:
"… selected transactions such as
Grab mobile wallet top-ups, wire transfers, payments to Non-Financial Institutions (such as crypto-currencies etc), quasi-cash and more
will be excluded from the awarding of cash rebate on the UOB One Card and bonus interest on the UOB One Account"