He was very wealthy due to inheritance from his father in law. You have the same amount of verification of that as you do that he only had a postal workers wages. And he could have been the Provincial Post Master with a substantial salary plus benefits. But after all you are hopeless suggesting that he is cash strapped without any basis.
Long ago it was possible to continue the Thai social security payments and continue to get medical coverage after stopping work. Not expensive and a great backup if still available.
So why don't you just do what they asked you to? That will almost certainly be easier than disagreeing with the IO about what should be done.
If you really did cancel it you should have a letter so stating and a stamp in your PP showing it was cancelled. Do you have those things?
those are very standard windows sold commonly in construction suppliey shops. Go out and check out new prices and that will give you a good indication of what you might get for them used.
only????
I do not link my cards, choose safety or convenience.
You can check Lazada and Shopee purchases via their websites. Don't know about the others, don't use them.