Discovery medical aid *******

My mom RH Evans is a member of discovery and each month I collect her medicine at Dischem and the amount she have to pay in is R13.00 Yesterday I collected her medicine and dischem system said Discovery no longer have ZUANOR 10 mg on their systemso the Pharmacist said Rosvator is the same amount so I said okay and suddenly my mom have to pay R133.86 and that is ridiculous because discovery said the old medicine is suddenly not on their approved list and the client have to pay.My moms monthly contribution increased January with R200 and now she has to pay in R100 more because of Discovery .Not good at all and not happy at all.Terrible Dicovery!