Spec-Savers SA - No end in sight.

We have been customers at Spec Savers for many years getting great service. Cracks in their service started showing with poor workmanship on their products. Had my eyes tested and informed to collect my glasses. Upon collection the nose supports was out of position, the Technician adjusted them according to my nose bridge. The glasses were not straight on my face, I showed the Technician who placed the glasses on a surface and he said it was straight and just walked away. Took the glasses and went home but had to adjust the glasses all the time. At home I found that the nose supports is still out of position and the one lens was about to fall out. Called another branch of Spec-Savers in the same town asking for assistance. Was told to bring the glasses in for adjustment, upon arrival I was told the Technician is not available and will attend to the matter on Tuesday (long weekend). Tuesday came and is gone.... Keep in mind that the nearest branch of Spec-Savers is 48km from our place of residence and have already covered 300 km and there is no end in sight to get my new glasses. Reference SBGD-B6931D