As soon as I got back to my room around midnight and heard loud music being played in the neighbouring suite room, I informed a front desk staffer who arrived ten minutes later. Despite knocking on the door of the offending room, there was no response. When I asked to be changed to another room so that I can rest, she said "the rooms are all booked out and I would figure something out".
I trusted she would take care of the issue and proceeded to take a shower, only to find the music still audible when I finished 20 minutes later. I had to call front desk again, and she said the offending room did not pick up the phone and would now consult the manager. Surprisingly, it was only after my shower when I called again that she offered to call the manager. I felt she was hoping I would tolerate the loud music and drop the complaint.
Eventually at close to 1am, 45 minutes after I had raised the issue, she proposed upgrading my room for the night due to the unavailability of same-class rooms. She told me I had to return the keys by 1 pm the next day. I was surprised by the lack of a customer service mindset when they said I had to return the keys myself. When I spoke with the same front desk staffer about possible misplacing the key the next day she threaten to charge me 500bhat for it.
Overall, service was brought down by the delayed response, lack of immediate resolution, and the need for repeated follow-up hoping their customers to drop the complaint themselves.