My number is in the middle of a half port from Digi prepaid to U-Mobile prepaid (Digi SIM is still receiving calls and sms although I could make calls from U-Mobile SIM). My U-Mobile SIM got activated yesterday and I checked that my was RM4.65 instead of RM5. This morning I checked that my balance further dropped to RM3.25. I switched off cellular data and only used wi-fi on my phone. I looked at the U portal for transaction history but there was "Nothing found to display". Does anybody know what these charges were for?