Missing pieces and poor quality sliding door and service

Bought a sliding door online. When the contractor installed it, we realised the keys were missing and we were given handles that are for the same side instead of opposite. There were also no holes for the handles drilled into the door frame which is a standard feature on sliding doors. I wrote an email and detailed everything and I was asked for pictures which I sent through. Thereafter my emails were ignored and nobody got back to with regards to a way forward. I then called a Nosipho from Greenstone who asked me to double check in the boxes and I told her that we had looked and that there were other things wrong. She then suggested I return the door and I told her that the door was already 90% installed. She also said she would get back to me which also did not happen. I am very disappointed at the service and the poor quality of this door. I would like some sort of recourse or some money back.