Anyone knows if UOB will ask customer to pay an accumulated service charge fee?

Should be a fall below certain balance fee/not maintaining a certain amount. If you have other services with UOB, probably can ask them to waive. Otherwise might be hard (to waive) but still worth a try. Probably if go physically to a branch has higher chances of waiver - can talk to manager etc. Good to resolve instead of letting the amount grow bigger.

U got $0 or never hit the min. amount in the saving account?