Metal shavings in my transmission

You do not specify what type of Golf, year and mileage, or if first owner.

Check your states’ Lemon Law…You might qualify for a buy back from VOA, given you had taken it back 3 different times for the same issue.
Personally, I would never keep such a car. If this is a new car under warranty and this is a hassle, just wait until the warranty expires and then it becomes an EXPENSIVE hassle.