@Sam *****
, okay let's hash this out. You're working here illegally without a work permit and without a Non-B visa on a 30 day visa exempt entry you got from bouncing out and back in at Mae Sai? Does that about spell it out?
You CAN extend a 30 day visa exempt entry by 30 days at the immigration office for 1900baht.
BUT you need to realize you CANNOT work without a work permit OR the correct visa. Good Luck