For all those complaining about the narrow area of focus on varifocals – speak to your optician. I went to varifocals the last time I changed specs, having used single vision for over 40 years. Game changer for me. Mrs NBT had swapped over ahead of me, and been fine, then hated her second set for the reasons mentioned above, to the point she didn’t wear them. The difference was she had gone to a different optician who use a different lens maker. For her third set we went back to the first optician and once again, all was great.
To me, it sounds like a poor prescription. I’d be complaining to the optician saying “this is not good enough”. If they don’t offer different options of lenses (maybe even a different lens from the same maker) then get your money back and try varifocals from someone else. You only get one set of eyes, and you use them quite a lot, treat them to some good stuff and spend some money rather than saving a few quid by using cheap stuff so you can afford nice set of forks / new phone / whatever