I feel your pain. I just went through a horror show with my convertible top. Was told I had a leaking hydraulic so I purchased the full set from Top Hydraulics and took it to a guy who replaced them and then the top wouldn't work when he was done.
He then said I needed to convertible top control module which I purchased and it still didn't work. Finally, I found someone who could put the car on the computer and rean tests on every electrical circuit in the car. He found the cylinders that were a problem and found one was replaced incorrectly. Top now works, but I having an new issue with a cable that operates two flaps on the tonneau cover. One is binding and the cable part number is A193 750 01 59 005 and of course is no longer available.
My advice is to find someone that can put the car on a computer an run a diagnostic. If it turns out you need a convertible top control module, I've got one for you.

Right now I need to find anyone that has any idea where I might be able to find a replacement cable OR has found a workable solution for this problem? Any help would be much appreciated.