Dissapointed with new varifocals from Spec-Savers.

I was always very happy with the service from Spec-Savers. However I am very dissapointed with my new prescription glasses (Varifocal), which I received on 02 June 2021, from Spec-Savers Middelburg Mall. My eyes strain when reading and blur when closing one lens so I went back on 05 June 2021 where I had a quick eye test and small adjustment was made to the left lens. My eyes still strain when reading and I develop a headache when reading for long periods. Closing one lens still results in a slight blur. Going back, no thank you so I bought myself a pair of ready made reading spectacles from Dischem. The medical aid will not allow a 2nd eye test in the same year. Due to the access I had to pay Spec-Savers I can't pay cash for a new set of spectacles. So now I am stuck with Prescription glasses which I can't use for reading but need them for daily use and driving.