Pedro's Glenwood Cannot Make Order or Process Refunds

I placed an order on the app and order was accepted. I went in store 45 minutes later to pick up the order and they did not begin to make the order. They said it did not come up on system, however I gave her my name and they had the order. I requested a refund as I wasn't going to wait another 15 minutes for an order I placed long ago, they indicated they could not do a redund and can only process one on Monday, If they could not make an order I do not trust them to make a refund. The operations manager tried to reason with me and offered me a cooldrink which I declined. I just needded my order. Pedro's systems need to be updated or their staff better trained.