Me port from Umobile to Celcom about 1 week, Shopee Lazada bank insurance all OTP/TAC cannot receive. Even I go re-register at ATM for bank and send UPDATE to 66300 also no working. I call Celcom they say merchant prob which I think like not make sense. Everytime I file report, they always say merchant prob then close case. Anything can I do besides port out again?