Bury car kit

I bought a a Bury Bluetooth car kit from them in October 2020 there is a 1 year warranty, when I phoned and told them I am having problems with it they asked me to bring it in witch I did, I told them it’s dialing numbers by itself and the screen is fading meaning going on and off all the time, they then said to me they will phone there supplier and find out what to Do so apparently they don’t make my make any more couse a lot of people were complaining about the Bury car kit, received a phone call from Marc this morning on Saturday the 29th of Jan saying they can fit a new one straight forward standard one but the cost is R2800 I find this totally unfair and would like this to be taken further, I mean it’s just over 1 year and 3 months surely they can help out a client, them Marc told me the Bluetooth could do that because there is always new software up dates on phones, I mean how can a software update make your screen go on and off and dial numbers by itself. I would like a new device in my vehicle but I am not paying R2800 why would they sell it if people are complains about the Bury car Kit