I don't want HR to pay back but I think HR will understand as I requested. If this requested does not suitable with HR policy, I will accept it. I ever discussed this issue with HR past long time ago already. They said needed my manager send this request to them only. If manager not agree, I will cannot get it. So, I just sent this request to you today. Can you request to BKK-HR to increase my monthly mobile allowance to suitable for me?