Went to the same optician for about ten years, all fine, no problems. Then one day they got my prescription wrong so they changed it. Was fine for a couple of weeks, then didn't work any more so they changed it and got it wrong again. Couldn't help me with contact lenses, gave me about five different strengths of contact lenses and told me they wouldn't change them again until I'd decided on my contact lenses. None of them were right so I gave up and found a new optician.
Second optician changed my glasses and they were wrong again. Changed them and they were wrong AGAIN. Gave me contact lenses that were wrong and made me feel sick. Every time this happens my neck seizes up and I end up seeing an osteopath. So far I've seen two osteopaths and a physiotherapist, and all of them have helped but said my neck will never fully resolve itself until my glasses get sorted. The optician said he'd never heard of such a thing. 
So they changed my glasses again, they were fine for a week or two but then didn't work any more.
Second optician actually phoned the first optician to ask for prescription records but couldn't find anything useful or any clues to anything.
I want to the second optician again this morning for another eye test and they told me a slight change in prescription which they insisted was right even though I couldn't see properly. They have now told me that some people have a weaker eye and will never be able to see 100% properly, even with glasses. Sorry but I don't buy this at all. Surely the whole point of glasses is that they make you be able to see properly. Otherwise what's the point?
The second optician have now said they can't help me any further and have offered to give me refund (their idea - I didn't even ask for a refund). Which is fine but they're basically washing they hands of me. They said they can't even suggest who could help me. I've had all the eye health test things where they look at the back of your eye etc and peripheral vision tests etc, which showed great eye health and no problems.
The first optician has refused to see me again, apparently because I "upset" them by asking for a refund (which they refused) and going to the second optician.
Can someone PLEASE tell me what to do? It's actually got to the point where opticians are refusing to help me! If I go to a third one, I'm sure the same thing will happen again.
And please no replies that just recommend opticians. I went to the second one on a personal recommendation and it didn't work. There is obviously something deeper going on here.
Why do I keep getting glass that are either wrong straight away, or right for a couple of weeks but become wrong again?
My neck hurts.