Hi i am singapore passport for the pass few years i have been coming to Thailand use visa free 30days. Then go back singapore for one month then come back again sometime extend my visa for another 30days at the local immigrationThe last month when i come at don mueang airport i was ask why i keep coming to thailand,i say for tourism,the said i have to apply for visa at my home embassy if the next time i have to come if not they will not let me in Thailand.they told me I can’t use the visa free too often.But why must i apply for visa when singapore passport is visa free to Thailand,can anyone advise or have any information about immigration requirements? Thanks 🙏