Disappointed

Went to the butcher this morning but item was incorrectly priced.It was brought to the managers attention.He advised me that I can't have the item for that price because it was staff negligence.Should I as the customer worry about staff negligence.He then repriced the item in front of me and then he and another staff member went to the back whilst I was still stating my case.But I know the CPA and my rights.I feel he was very unprofessional and my voice was not heard.