Can I Apply for a Non-B Visa Again After Overstaying?

Question regarding Non B work visa / permit. Few months back I successfully applied for both, got the 3 month stamp returned to pattaya where my agent was then going to extend it from 3 months to 1 year. Very long story short, time expired and I significantly overstayed. Now back at savanakhet to get the 3 months non b again, I already have my 1 year work permit in hand and have just paid the overstay. Currently in line at the current consulate and a fellow traveller just told me you cannot apply for another non b visa if its listed at the same address in such a short period of time, is that true?