Unable to a topping for an equally priced topping

<p>On Saturday 18 Feb 2017, I ordered 2 large pizzas from the franchise in Clubview Centurion. My oder was for one Bacon and one Europa but I had asked that they exchange the Russian topping for Chourizo. The cashier advised me that I can't swap toppings as they have been instructed not to do so (Not sure if this was instructed from Head Office or the Branch Manager) because they lose out in the end. Now I would like to know how the business loses out on this? I was exchanging a meat topping for another meat topping so the cost is exactly the same. I understand if I exchanged for example mushrooms for meat as they are priced differently but like for like? Doesn't make sense to me and I am a bit dissappoint with Pizza Perfect for this. Your competitors are able to do this but not yourselves and you could lose out on quite a bit of business for this. Thanks, David</p>