I think we will try and talk to management directly. Avoid our CSA altogether now.
Good luck with your complaint. There is a management email that you can directly contact them on. I can understand your frustration. My escalation to management was also in relation to my kitchen so I was pretty upset at the time. My only difference is that I had a wonderful CSA that was willing to help me escalate my issue to management. My kitchen issue was also approved due to the legally binding contract that was agreed to by us and EBH, otherwise I am sure it would have been a flat no as well.
HB hmmm not sure then what the noisy water sound is that you can hear from a different room.