Utter disappointment

I booked myself a room on the 27th of July. I got room number 4. Which has a joining door to room number 5. The guests in room number 5 decided to play their music loudly and talk loudly till well after 12 am. I could not find any staff to sort this out. I really expected more of a so called 4 star hotel. I will never recommend this hotel to any one.