We Buy Cars Silver Lakes Branch

I bought a BMW F 750 GS 2020 model from the Silver Lakes branch in Pretoria on 17 January this year, after I got home I noticed multiple faults the screen service notification still popped up after a expensive service I had to pay with their provders they use, it showed warning lights, rear tyre was definitely not road worthy was smooth, horn was not working, wire was sticking out from the side, top box bracket was broken and had a hole in the bottom hidden with a mat, the heated grips was not working, battery was flat, so I had tem come and fetch it to sort out the issues after more then four weeks and no communication from them I called again and asked what the status is of the motorcycle so then after two days they said the dealer that that did the service cannot reset the screen so my question is this after 4 weeks why did they take so long? Why did they service there if the dealer do not have the tools to reset it after a service? then after anothe week or more it went to BMW and they took another week with the quote and long story short it was too expesive to fix all the faults so they have to cancel the transaction and pay the bank, now here is the thing I have an email from them stating it was going to take 2 -3weeks to finalize it is more thene a month and another installment from the bank went off and they are still not done....this is by far the worst communication and service I have had in my life from any dealership, they do not respond to emails, they do not even respond to the bank when they tried to find out what is going on why it is taking so long.......I strongly advise to watch out for this branch the communication is non existing unless you call and they do not respond or call back if there is an issue on this scale they are quick to take your money but when there is an issue on their side they simply have no worries no haste to support or help their custumers, how do they expect me to pay for this after all this I want my money back the mistake is on their side not mine for taking way too long two installments later it is still not sorted out.