I purchased some glasses (Ditas) I went into store 3 times for glassses to be adjusted to no avail so I picked a different part fendi about 2 wks glasses keep sliding down off my face I went back into store for them to be adjusted same day still sliding down my question is are these ladies qualified to make these adjustment I work long hours don’t have time for the back and fourth why do I have to keep going there so many times