server errors

I'm really tired of error 90000 or 10105 or whatever , the server always kicks me out and even if it does not the game is ultra slow and I can't do anything , I can only play on late evening or night cause it seems to work a little better , but that is problematic.
Now it's a month that I have this problem , your maintenance or patches are not doing any good and I'm unable to play or enjoy the game. Please fix the game since I'm paying for a service I'm not receiving and I'm really pissed now.