a transit visa can not be extended. It is good for 30days, but after you could do a border run, if you did not consume the 2 allowed yet or apply for a proper Non Immigrant Visa.

AFAIK not possible at border around Bangkok, their reasoning is that you stay here 90 days already.

what nationality in particular ?

no, you did not understand, Savannakhet will deny you a Tourist Visa if you stayed in Thailand more than 90 days in the past 6 month, even under working visa. So you can border border run No1,than 30days at Immigration, than border run No2, than 30days. So you have around 4 month time to get paperwork together. Than can apply Non B in Vietiane or Savannakhet.

do a border run to get 30 days first to gain time.

You are Filipino ?

you can apply for a Tourist Visa in Savannakhet only if you stayed less than 90 days in Thailand for the past 6 month period.

If my memory serves me right you have a history of stay in Thailand. AFAIK, I hope you can proof me wrong the Consulate is nowadays very strict on persons that stayed more than 90 days in the past 6 month (they even consider stay Non Immigrants in that rule). When did you apply ?

@Kate ***********

there must be another story behind that story...

Nothing has changed at border. TWO visa exempt in one calendar year. Only Embassies nearby take a closer look at any ones visa application.