I understood under the new rules for OA visa the money sits permanently in the bank. The reason is you require 3 months before a 3 months after your application. And because you apply every 12 months this is the result.
Nor in Sukamvit you spend $22US you won't. Look up the Hilton hotel sites. I was at one place overnight prior to my flight and we had an adjoining room.
Keep going mate. Many of us have been there. Don't hold out to work though; it's illegal unless you have a work permit and it's in an industry that's nor reserved for Thai.