Remote job can be done from anywhere, as long as you don't work with any thai company, you are good. That's why they formally introduced this visa so people can stay longer, rather than bounce back
send them email and explain your situation that you been giving answer about my visa will approve today and its been 3 days, with same answer, maybe they will get it done as email is recorded and can be read as call gets answered and forget sometimes, but be polite :)