Bad customer service

While waiting in the queue my two year old suddenly needs the bathroom, so we asked if we could use the bathroom, the answer was that there isn’t one in store. Ok but can she use the one the staff use? The lady says no it’s not policy. I said but what then if she goes on the floor? Sorry it’s not policy to allow patrons to use the bathroom. So I asked for a refund of my purchase. I’m not going back to clicks. Really, can you deny a two year old the bathroom.?