Consumer Advice Please

[dizzydo]

I bought 7 metres of fabric in the sale (it was 50% off but was not marked up as faulty).
On getting it home I have discovered there are two marks at the beginning of the roll about half a metre from the bottom. I need all the 7 metres I bought not 6.5 and anyway I paid for 7 metres not 6.5

Can I go back and demand they give me another 7 metres.

Any advice very much appreciated
TIA

thanks domesticgrumpess. I was rather surprised that they measured out the fabric and cut it without me being there, I was looking at something else at the time. I bought it from Designers Guild so wasnt that cheap,even in the sale!!

Thanks for the advice domesticgrumpess, I did! They gave me a full refund