The Bell, Cotton End in Bedford

I have just been charged £7 for a requested 175ml Pinot Grigio, which was a short measure as the pub ran out of this wine. When I queried it, I was told that I had been charged for a mini Pinot Grigio, which I have since realised is a 187ml bottle, so instead of paying for a 125ml actually served, I have probably paid more than a 250ml would have cost