The trunk doesn’t open anymore

Hello, just TÜV and inspection successfully brought behind me, the Diva strikes me mercilessly. For months already (it had already been posted here) again and again problems with the trunk flap (without automatic): sometimes it closed unreservedly, sometimes you had to close twice, because the first time it pulled itself up again by itself. This was completely irregular and was not predictable. Now a new variant: without warning the trunk now does not open at all. Have tried everything. Here is the status: 1. When you operate the unlock from the driver’s door, you hear a slightly scratching sound (like sparks) that ends after seconds. The locking motor does nothing. 2. The emergency opening by key does not work either; the key cannot even be turned. 3. Remote control and emblem key do not deliver any result. 4. There is nothing stuck between frame and flap. What can be done now? A visit to the workshop before some She immediately wanted to replace the complete locking system (“There has to be a new lock made”). But that can not be a mechanical problem, because the whole thing was always going on in between. Just a few minutes before the no longer opening it worked wonderfully well yesterday. Now – as always – there are important things in the trunk that I need. Anyone here still knows a tip/solution the Koff I’ve tried everything in the relevant thread here. I don’t have any confidence in the workshop anymore, they have failed every time.