The radiator makes unbearable noises throu out the night, which drives her insane. We think that this is due to air pockets in the pipes, we can hear crackling and water drops.
The heating system is common to the whole building, and I cant turn off hot water.
How do i open this shit
Depending on the state, you could also easily record the calls for documentation. Look up state laws, and if you happen to be in a one party consent state, have at it with the phone calls, too.