If your restaurant is a registered business (2 million paid-up capital) in Thailand, speak with a lawyer. You can apply 1 work visa for a foreigner when you hire 4 Thais.
: Yes, the amount of money has been for my bank account for several months. Of course, there were many transactions but still 500k at the end of each month. Some Embassies want to see more than 1 month of funds to avoid applicants borrowing money for a week or a short while just to qualify for DTV.