Really? Why would these tuition tag themselves as govt agencies?
These tagging affects MDR charged to merchants. Government agencies have way lower Visa/master MDR cost and allows the merchant acquiring bank to charge a lower MDR to the merchant and yet still make a good profit.
You can raise a complain to your credit card issuing bank - in this case UOB, to recognise you and also lodge a dispute to Visa/MasterCard for their action. Even if they can’t recognise you, hopefully they bring it up Visa/MasterCard for rectification action to be taken and correct the classification.
Of course, they will probably ignore you if both the card issuing and merchant acquiring bank is the same.

