By publishing this on, as has been said, a very public forum, you have;
1. Perhaps opened yourslf up to all sorts of problems in court by making completely unsubstansiated accusations and insinuations against the CAA and it's staff.
2. Put yourself in a very difficult position regarding your future career - every airline will know who you are, even if you pulled this post today.
3. Put yourself at great financial risk - your sister may be a Barrister but, unless she owns her own Chambers, she will not be allowed to represent you without the express permission of the Senior Partners of the firm. They may decide that your, already very weak case for any compensation, is so ridiculous that they wouldn't risk their reputation in allowing their name to be sullied by being associated with you.
It's not just your own legal costs you have to consider, before you can "take the CAA to court", you have to bear in mind that you are liable to cover their costs as well and that will almost certainly bankrupt you if, sorry, when you lose.
You are naieve in the extreme; Be grateful you got a re test and that shortly you will have the full rating.
You've already caused untold harm to your own professional reputation - stop being an idiot, quit and repair the damage while you still can.