Had windows installed in September been having pro...

Had windows installed in September been having problems getting a hold of the people to replace the windows that need to be replaced. Try to call the company at their 800 number and got a person that was that third private line call the phone number on our receipt that also had a private phone number not sure what's going on but I am very unhappy with this company and I even recommended them to my mom. I am so upset I'm going to have to tell my mom to cancel that order she was going to pay over $14,000 for what bad service can't get a hold of anyone left voicemails just a bad bad company