Immigration Overseas — Immigration check

I was flying from Delhi to Bangkok while doing immigration check no one told me regarding arrival immigration regulation at Bangkok when i asked them 2 time is there any rule or visa i have to acquire while transisting through Bangkok.
They said everything is clear no need of transit visa or any documents.

But after reaching Bangkok they stop me at security check and asked me to go back to india because I don't have Thai pass.
After all things when my family connects Delhi airport staff they still denied that I don't need some pass like that.

I have to spend my 16 hours at Bangkok airport and return next day to india.
It's all immigration check officers fault because they grant me immigration check.

All i want is to make rules crystal clear to everyone and for compensation i need my both ticket money from Delhi to Bangkok and Bangkok to Delhi