Apollo Pharmacy — Rude and ruthless behaviour of staff

I am a customer of Apollo Pharmacy, doctor prescribed 30 tabs, brought 10 tabs day before yesterday and approached Apollo pharmacy, Kattupakkam today(10/11/201/21) morning 10:30 AM for the remaining 20 tabs. Apollo Pharmacy staff was not bothered to check the availability, he says not available straight away and he was very rude and ruthless on behaviour. I asked for the manager contact, He says what maximum Apollo Pharmacy can do, they will remove from job, I can find another...this attitude shows he is on fault, not bothered, arrogance etc... I even registered my complaint with the Manager...such a customer care will definitely affect any organisation... with this experience I am not comfortable...