My A6 has been a nightmare since day one. Long story short, car has been with Audi who have replaced door cards, seals etc on the drivers door amongst other things over the past 12 months (best part of £6k which excludes the £2k they have just spent!). So, driving back after the initial repair to the door and water is pouring in from behind the door card. They ordered in a door membrane, didn't work - so they replaced a door seal behind the bose speaker. Drove back on Monday and it seemed to have cured the leak. Today, noticed the door card was loose again and a seal trapped underneath. Removed card and found they had sealed the leak with silicone, cross threaded screws and lost 3-4 screws so pinched them from other areas! They even got silicone on the speaker cone. Would you say this is an acceptable repair, doubt it will last ? Photos attached.