Boot me off the server then cant get in

I have been randomly booted off the server countless times from errors whilst ive been doing duties or something else for no apparent reason. This is becoming very tiresome and making me very mad and not want to play the game. It takes about 2-4 hours to even get on the server then to get randomly booted from the server after being on for a few hours then not being able to get back on is an ABSOLUTE JOKE! It needs to be fixed immediately otherwise i can see quite a lot of people including myself who will refuse to play because of this absurd error.