Funnily enough I was in Hua Hin Market Village yesterday 27/6/22 & walked into DTAC open office by chance ..complained bitterly of 15yrs of 2-4 texts every day & threatened them with immediate cancellation if they did not block ALL texts & suprisingly she ranr up BKK call centre & they agreed to block ! Having said that just got 1 yesterday in Thai as usual but hopefully confirming total block...so there you go people !