Hi Ariyaporn and Som,
For attached invoice, can send me in SGD amount instead of Thai baht?
We will issue you credit note using this invoice to be set off with our invoice, so when you are paying us the monthly fee at SGD 6000 per month, you can minus out with this credit note ,example $6,000 - $238 = $5762.
So the amount that you are going to pay us is $5762.
If you have any questions, please let me know.