Brought my Audi here to get serviced, my battery k...

Brought my Audi here to get serviced, my battery kept dying. Took it twice payed them twice each time they told me the problem was fixed but it was not they kept it for almost a total of 3 weeks and did not fix it they pretty much just took my money and ran . It did not sound like they really even bother to see what the problem was. I am done with prestige will never take my car there again.