Dis-chem under prescribed my meds and they don't care

I am a chronic patient and receive my medication from dis-chem park meadows. In August 2021 Dischem dispensary issued me my chronic medication but less dosage than prescribed by my dr and with a sticker showing the right dosage amount. This meant that I had under taken the amount my dr had prescribed. 1 n half months later I got extremely sick and needed to be hospitalized. When I had double checked my medication I realised the error they had made. I contacted the branch and all they did was said sorry and they replaced me the short medication that they had not issued to me. One n half months later you would think dis-chem would wonder why their stock is over. I'm not sure what to do with the extra medication are they implying that I should over dose myself???? This is ridiculous. For a big company like dis-chem I should be compensated for their error!! So disappointed. It's unfortunate that I need them for my chronic medication.