Horrible after sale experience!

I bought a car in February, and the sales process was great I even wrote a review commending all the people that were part of the sales process.

When I picked up my car, the radio required an authentication key, and I was told to go to a dealership to request-understandably so, I went and was given an authentication key that did not go through. I went to second dealership that gave me the same code that was not going through and suggested that I bring the car in so they can diagnose and see why the code is not going through. I was charged for this diagnosis, which revealed that the radio is in actual fact broken and needs to be repaired (the repairs would cost an arm and a leg). I then reached out to Weelee to explain what happened and the person I spoke to made arrangements for me to take the car to the workshop to have the radio fixed. I did that just and my car was there for a week- in that week I didn't receive any updates instead I kept following up (this is the only car we have so we were without a car for a week), I was told that 2 radios have been fit in the car and they both don't work, a 3rd will be tried on Thursday which also did not work. I then requested to have the car picked up because not having it for an even longer period would cause train to me and my family. When I picked it up, there were *****s on the floor and the radio was off whereas when I initially took it, it could be switched on but just needed an authentication code. I have been calling, sending WhatsApp messages and email requesting assistance for the past week with no response. I am so disappointed at how my query is being handled, it seems like all that was important was to get the sale-anything else doesn't matter.