In my experience, very few patients who get tubes (most are children who can't really communicate what they hear/feel) have "immediate improvement".
First, a middle ear filled with fluid is not really healthy. There may be some considerable inflammation from this unnatural flood (the middle ear is designed to be filled with AIR, not fluid). Second, the procedure itself, causes an inflammatory response when the ENT cuts a slit in your eardrum, aspirates as much fluid in the middle ear as possible, and then, inserts a foreign body to create an artificial opening. Third, ears do not particularly like foreign bodies, so the tubes create inflammation and swelling.
Your odd hearing is due to this new opening, but eventually, your puzzled brain, middle ear bones, etc. should adjust. I don't know when this will happen, but for most people....IF you can allow more time for things to settle down, things should approach a tolerable "normal" in several more weeks. This is just a general guess, however, since I know nothing about your particular case.
If that fluid remained in your middle ear, you can just about guarantee that your hearing would eventually be permanently, and irreversably effected. Removing the tubes will still leave the hole, so it may take several more weeks before your eardrum heals, and I suspect, the fluid will start building up again. You will be back to square one, but what will you really accomplish? The fluid will slowly and graduallly cause all sorts of trouble.
I think you should have been better prepared for what you are feeling now, but to remove the tubes now is not really going to solve the underlying problem that led to the tubes in the first place.
My suggestion would be for you to try and wait out this post-operative period....several more weeks, or a month or more. I know these symptoms are very annoying, but if you can just tolerate and overlook them for a short while, you may experience the positive benefits that your ENT intented. There are medications that can help you for a while, if you cannot cope with those noises-- the ones putting you over the edge....
If you had a big splinter removed and now your foot is even more painful than before the surgery, would you want the doctor to put the splinter back? I dont think so....
This is my opinion....perhaps not the only opinion, but the best I can offer you. Talk to your ENT and get his/her comments but I think you should hang in there for a while longer.