I REGRET BUYING A BMW - worst experience ever

The worst experience ever, i have taken the car to the dealership for than 6 times and its not getting fixed.....now im told its my fault....i regret buying the car from day 1 its been problems - boot wont wont open, sunroof is loose( took in it for that too still).... its been 5 months, i cant even drive the car because it makes so much noise...its still practically new.... I regret buying the car....BMW