Terrible experience and ****** of note 1

Terrible experience and ****** of note 1. Fitted a polo battery size onto My 420i Grand coupe, Every second Day the batter is running low now I understand why. Now I need to buy a new and proper battery. 2. Rear light Not working, And they told me to replace the globe, But the light is faulty itself and need to be replaced. 3. No Jerk, No lock nut, 4. **** about the tyres being run flat tyres, Learned these when I hit pothole. 5. Included Motor Warranty on my Deal, But the Warranty is Invalid, Third party Confirmed these. 6. Brushing off all my complaints.