CONSTANTIA PHARMACY SOLD ME AN ANTIBIOTIC WITH ONLY 6 MONTHS EXPIRING DATE AND DI NOT TELL ME

Bought an antibiotic in June and discover in december that has expired in november Went to the Pharmacy told them about it and they said that when they sold me the antibiotic the expiring date was still right. Normally an antibiotic has an expiring date of few years. So this is mean that they stock old medicines They were not interested in a refund or a swap with the same medicine with the better expiring date. I went to another pharmacy and ask them if this is normal and they find it very unprofessional that they keep medicine like antibiotic with only 6 months expiring time and not say anything to the client. I will never buy anything again there