Visions Electronics review: backup camra system installed wrong

My name is Amarjit Sandhu owner BOBBY AND SON ENT. LTD. 9858 123 a st surrey bc phone#[protected]. I wanted to install a backup and a dash camra on october 2 2021 sales person gave me a price $787.58 inv.#[protected] and Ipaid it sales person said we are going to install it next week.so I went next week on october 9 2021 and drop the vehicle there .Couple of hours later sales person calls and said we can't install it on your audio deck because it doest have the plug for the camra and we have to install a new deck for $366.80 . I was at work when sales called he said we are going to put NAKAMICHI NA3600M .I said if everything is going to be same in the new one I said go head and install it .It was about closing time for the store I didn't had much time if everything was okay or not .then sold me warranty for $36.73 so now I thought if there is any problems they will look after it. Next day I was check the system the camra was offset was not centered, then check there is no navagation no voice control, the sysem does't even work when I'm about 2 kilometres from my house even the bluetooth shut off in the middle of the call. I called the sales person explained everything to him he denied everything and hangup the phone. Next day on october 11 2021 I went to the store talked to the sales and the manager I explained to them again about the issue but they both denied and were rude and said go from here we can't do anything.I was shocked what kind staff is working for Visions there just after my money and don't care about customer at all .I checked other place there is a plug available for my audio deck, why the sales did not check for $1200.00 I got a system that's not working and improperly installed even the wiring is left under the driver seat that moves up and down any time the wires could get crushed under and the wire is not protect as it goes along the outside frame, the is off set as well not cetered. I WANT MY FULL MONEY BACK OR I TAKING THIS TO COURT.