I heard this story from my relative who had a childhood friend closed encounters with the dead. 

I heard this story from a personal experience of my sister-in-arms, Lemmy.

Lemmy lived with her mom near Serangoon Gardens and she is the only kid. One night she was struggling with her thesis so she plug into her iphone for some music. The music goes by but her thesis still going nowhere and it's almost 4am. So she decided to cook some cup noodles for supper.

She got back soon and plug into her music again, typing in the keyboard. Then she heard some interference from her headphones, sounds not included in the music track. She stopped the music, removed her headphone, but the room is as quiet as a mouse. 

So she continued with the music and typing, and after a while, she heard it again. This time after she stopped the music, she faintly heard something like "tolong... tolong..."

Lemmy wanted to run to her mom but remembered her mom went for a wedding in JB. She picked up her cordless phone on her table to call her boyfriend who lived in Bishan, thinking he will get to her house quicker than her mom. After she dial the numbers, there are no sound, only "tolong... tolong..."

Lemmy screamed and threw the phone onto the floor and our of sudden the door bell sounded and she dashed and opened the door without thinking who is it. Her mom came home early because of heavy rain over at JB and find her daughter face white as sheet, shivering in fear. They lived in a hotel that night. Morning came and they visited the temple at Bugis and found a tang-ki to help with the haunting. 

The tang-ki said lucky the spirit only just passing by but lost the way back home. After some offerings and money, everything is back to normal, and Lemmy still can't finished her thesis. 

Many people rent room or beds in Singapore, due to whatever reason you may have. But the point is, next time when you rent a room, better check why is it so cheap.