Arrogant Store Manager (Park Square)

Purchased a Marmite spread (7/08/2023) not knowing my Partner was allergic to Gluten, Nishkar(Supervisor) confirmed I will not be able to return the product as the seal was broken, was happy with that, upon looking at the slip I was charged R79.99, even though there was promotional signage on the self indicating that the Marmite and Bovril spread was R47.99, When I queried again Nishkar advised the promotion expired the day before and he will have to speak to the Store Manager (Tim) and go over the video footage. I requested a call back with no avail. I contacted the store today (8/07/2023) and only after the 6th attempt did the Store Manager (Tim) answered, I only told him my name and referred Nishkar as my first point of contact and he continuously started speaking non-stop without even let me explain the full story, he continuously spoke over me. I worked as a Senior Manager in retail for 10 Years and currently a Customer Service Manager responsible for Thousands of Clients and you always show Empathy and LISTEN to your Customers, not constantly Speak over them. A refund for the difference was honored although Tim claims he viewed video footage and the signage was removed but Principle is very important, the Customer always have the last say and must be Given the benefit of the doubt. Always. Thank-you Nishkar for closing of this Escalation.