@Ivan ***********
MIGHT be able to BUT that's totally gonna be up to the immigration officer they're sitting in front of.
@Mark *******
they don't have to sell you that 7 day get outta thailand extension denied stamp for 1900 and can cancel the extension from the date on the letter and tell you to get out that day.
That was certainly a mistake on your part to have them write the 3rd when your current extension expires on the 9th 🙁
That means when you show up Tuesday the 3rd, they'll cancel it effective that day and if they won't sell you the 7 day get out of thailand stamp you will need to be outta the country by midnight that day or run on overstay..