Specsavers Carnival Mall Poor customer Service

My son had his glasses done at Specsavers Carnival mall in January this year. We requested Trial contact lenses for Cooper Vision Midays. When we collected the trial contacts we were given another brand just a single pair and were told that Cooper Vision doesn’t supply trials anymore. I explained that my son reacts with the liquid in other contact lenses and was told to still try it. My son wasn’t happy with this today when I went in to complain Olivia who originally told me Cooper vision doesn’t supply trials suddenly says oh she will order me the Miday trials. This was only after i said that i had emailed Cooper vision this morning regarding this matter. Further to this I requested a printed script so that i could go to another optometrist I was told sorry the script is blocked they can’t access it to print it. Is Specsavers favouring certain brands and forcing customers to use other brands than their usual brands?????