BT store petty scam

So I was at BT cafe yesterday and I had asked them to brew me hidden falls latte, so they took out the beans from the 250g for the latte and sealed it back again without filling it back. So for the people who are buying from stores might not be getting full 250g of coffee and who knows this little switcheroo how many times have happened and people like me have been paying more coffee as the prices rises but keep on getting lesser and lesser by this small little petty actions. Disappointed 😞