It does seem weird. All I can say is that changing the tip amount is rare. I’ve never seen it happen, or perhaps I’ve never noticed. Additionally, I don’t worr

It does seem weird. All I can say is that changing the tip amount is rare. I’ve never seen it happen, or perhaps I’ve never noticed. Additionally, I don’t worry about it thou because my past experience suggests I can reverse the charges if I call the credit card company fairly easily.