Although I don't work with ears, nor am I a practice nurse, I am a qualified nurse.
Any ENT specialist will tell you not to put anything smaller than your elbow in your ear........but we all do it. Shoving anything, even ear plugs into your ear, can shove wax further down the ear canal. Doing this on a regular basis can eventually block it, hence the deafness. Some people are more prone to wax build-up than others. I've had problems like this myself, and had my ears syringed about 3 times in my life.
Your GP practice
should syringe your ears. At the end of the day, if you're deaf , you're deaf. If they're blocked, they're blocked. Using slightly warmed olive oil is the best thing to do, and usually sorts it out, as does Otex (I love that stuff!). But you've moved beyond that.
How long have you been using the olive oil for?
Make an appointment with your practice nurse, and use olive oil a couple of times a day, every day. Slightly warm it (only slightly and stick your finger in it first, to make sure you it's warm and not hot). Tilt your head, and using a pipette, drip the olive oil into your ear. Try and keep your head tilted for a little while to let it soak in. You can then dip a cotton wool ball into the oil and then
gently in your ear to stop it dripping out. This is great done just before bed, and try and lay for a while with the affected ear up.
You need to do this for a week, or at least several days before seeing the practice nurse, as the wax needs to be soft enough to extract.
Getting your ears syringed isn't dangerous if the person doing it has learned the correct technique. If they force the water in through a syringe, it can damage the ear drum. The water shouldn't be forced straight in. They should use a machine like this
As you can see, the thing they stick in your ear is curved at the end, and this doesn't push the water straight forward in. It also pulses gently.
I've had this done and I loved it. (But I'm weird). It tickles slightly (which made me laugh when I had it done!), it can be a little uncomfortable, but not painful.
If your GP practice still won't do it, ask them why, because at the end of the day, your deaf, and you've tried what you can. If they won't budge, get another GP, one with practice nurses!