Guys, the reason for their frustrating (deceitful?) behavior is right in front of u.
At least 3 members shared such experiences, and reported paying them in full. Why shouldnt they continue with a method that works for them? Within their peer gossip they probably refer 2 such clients with the Thai term for "suckers".
If u want 2 make sure that he stays 4 LT and performs, tell him up front that the pay is either LT or nothing.
[Personally never encountered the prblm, bcs I dont do LTs.]