Domino's Pizza review: rude employee told me my pizza was given to someone else and have to wait another 15 min

I went to pick up my order at 2265 marcel-laurin boul saint-laurent qc h4r1k4 and the cashier told me that it will be ready in about 5 min as they have a lot of orders. The app said my order was ready but I waited patient for like 10min. I am a regular customer and I know that something was off since a pizza is normally ready within 15min. I asked the cashier again for my order and she could not find my order and was talking in hindi with her colleague (an old indian lady). She then came back telling me it will be ready in 15min. I was confused and told her "how come? The app said the pizza is ready and before you told me 5min and now you are saying it will take 15min?". The old lady told me word for word in a severe tone "listen, it will take 15min for your order. Either you wait or we refund you your money. Someone else took your pizza so we will have to make a new one". I was with my cousin who is on vacation from france and I was so ashamed of getting almost screamed at that I took my refund and left the store as fast as I can. Never in my life that I was humiliated like that in front of a lot of people.
I am a regular customer and live extremely near this store. I am a pizza lover and afraid to go to this store...

They did not apologize at all for the mistake. I want a follow up on this as this is unacceptable to receive a service like that. Domino's should treat their customer with respect.