I wear varifocal lens glasses and picked a pair from your Bolton store when I received them I found that i physically could not see through them at work and when I raised this to staff for the fourth time they informed me that the glasses were to big for me so the varifocal was wrong - something that should have been raised before the purchase was made. I have to pick a new pair of glasses and I am having to pay an extra £50+ for a mistake that could have been prevented weeks ago if the staff had told me beforehand. Lesson learned I will not purchase glasses from Specsavers again.