Board Thread:Support Requests - Getting Technical/@comment-33690080-20181112144709/@comment-9605025-20181205222755

Go to Special:Forum and read the board descriptions. Find the one that best fits your case and click the title to go to the page. At the top, there should be a box for you to start a new thread.

However, to address your case quickly, the most you can do is politely try to convince the admin otherwise. The one exception is if they have violated the terms of use. From your description, it sounds like that isn't the case so if you can't convince them, you might just have to wait it out (or move on if the block is infinite).