worse service ever.

I took my car(bmw 335I)two weeks ago to BMW NORTHCLIF AUTO for battery cable replacement as part of recall campaign, the cable damaged lots of electronics in my car including beam lights, driver door lock..., I now know that bmw cars are not reliable since their factory fault destroyed parts in my car that they dont want to fix. they discovered that they weak battery cable burned out my fuse box, and then ordered fuse box and change it. After that, my car became worse, it broke my whole immobiliser, display screen,... And then I didn't take the car, I left it for them to fix, even today, they haven't touched it, when I call, they tell me about how full they are booked out whereas my car have been ther for 2 weeks.they keep telling me stories, never update me until I call them. I dont have a cutesy car, I have to use a taxi for everyday transport. I have never experienced such worse service in my life, especially from big names, I wouldn't consider buying a bmw in my life or even advise someone to buy one. My car smokes becouse of the bunt out fuse box that send wrong signals and voltage to fuel pump. Bmw dont care about their customers , they just want our money