Poor air conditioner customer service

Although I can't complain about the computer and tech department at Compuden, I am greatly disappointed in their service concerning the installation of my air conditioning unit. I have been waiting for them to install the trunking for my unit (outside as well as inside) since March 2020. Every time I arrange for them to install it they just never pitch, they don't even have the decency to let me know that they can not make it. The pipes outside are being exposed to the weather, who is going to pay for damage to my unit due to their negligence. I will not recommend them for any AC related services.