"I took a trip to the U.K. without a re entry permit on my retirement extension ( from a 2016 OA visa ) intentionally."
Did you do this because you didn't maintain the 400K during the rest of the year?
No need for a lawyer, the Labour Office will help. One can get 30 working days of PAID sick leave per year. Make sure you have a letter from your doctor for HR which explains your medical situation.
The big difference during bad traffic will be this one: "If taxis are stuck in traffic and can't move 6 kilometers/hour the fee will be 3 baht a minute." Is fair enough in my opinion.
Yes it does, when prices go up you have less buyers.
Revenue says nothing, you could be making a loss.
Do you have tax statements for the company?
Profit not important? You have no clue about how a company's worth is calculated then.