6pm on a wednesday evening, called slingshot to log a fault on my landline and was only on hold for 30mins. great improvement over recent months. 

I had tested the voltage at the demarc after disconnecting the house wiring and confirmed for myself it was a line fault. he did an imbalance test and found an issue and was happy to instantly start setting up a trouble ticket without going through the scripted "have you tried rebooting your telephone" crap.