The things nightmares are made of!!

I ordered and paid CASH for sliding doors in July. From the initial to current the communication has been non-existent except for when they call to make excuses. The sliding doors have been repaired at least once a month since installation. Nothing ever works. The doors are now cut unequal, they misalign, they gape, they are dented and scratched. They chipped the walls and did not return to cement. They cancel appointments on the day, minutes before they are due to arrive. When I demand a new door, I'm met with silence.