Went to Jomtien immigration yesterday as i needed a confirmation of address for the bank. The lady behind the counter on seeing my passport took it to another counter and when she came my entry stamp had been changed.
My Non O-A visa is until 14 Jan 2019.
The border stamp was until 25 April 2018 being 90 days.
This has now been changed until 25 Jan 2019 being one year from border entry.
I am thankful this lovely lady behind the counter picked this up for me and had it fixed.