Khun Wuttikorn
We are unable to accede to the information you just shared. As shared in our earlier quotations, our payment term is 50% of the full invoice amount upon confirmation of training with the remaining 50% be made before the end of Camp 2. If this is agreeable, we will issue a revised quotation and invoice today for PO processing and payment be made on or before 23 April 2015.
On exception, we have agreed to give one hard copy of the 2-in-1 page PowerPoint slides as a master set strictly for your internal and future use.
Thanks,