Worst stay ever at East London ICC

I was there on the 20th of August to the 22nd , on my arrival I checked in & I was given a room with an occupant, room 1009 to be specific, they changed me to room 524 where there were athletes or participants on that floor who were so noisy as from 4:00 am,they were going up & down also singing. I requested to be changed, meaning to be given a 3rd room. On the 21st I was changed to room 1002, the room was so smelly remember when I was doing up & down no one bothered to assist me with my lagguage, I had to request my colleague. I reported & a certain guy came poured something in the bathroom and told me that it's a sewerage and the hotel staff was actually aware of the smell but decided to allocate me to that room, the guy who was cleaning the bathroom suggested that I must request to be changed I told him that I don't have the energy because I've already changed three times. The smell was so unbearable at night but I was so tired I just told myself that it was the last day.