Scrivens basically charged too much money from customer . Once we booked eye test then they offered to provide a glasses as per NHS Voucher .Once we had done eye test the they claim more money for us , this is not acceptable. If they could not make glasses with in NHS voucher budget then they need to inform customer before book eye test. Boots and spacesaver could make bifocal glasses with in NHS voucher budget , why should Scrivens cheat their customer .