Regarding another customer billing of the charges e-procurement to us.
Refer to attached file (Price THB400 /Month) Charges 1,200 Baht per quarter, or 4,800Baht per year.
Therefore we request you please deduct price charges to be 4,800Baht per year instead.
Beside please also consider and take action on the revise letter to us again.
Thank you very much for your good cooperation.