Sometimes it is good to shut up and let the voice of the experienced say what needs to be said:
Dear Marion and ‘gang’
May I thank you all for the excellent service you have organised with the oil companies.
I have just received my account from Br Fuels at a saving of over £48 for the 600 litres they delivered and this was after checking the cheapest quote myself which was actually Br Fuels.
Keep up this sterling work as we old codgers do appreciate all your hard work.