First Post so please be kind.
My local Tesco has a sign 2 x 500ml Listerine Mouthwash for £5.00. However when I went to pay it appears that Listerine Original at £3.46 is not included in the offer (Not made clear on the sign). I purchased the items and returned to the customer service to get it sorted out. Tescos policy is to give twice the difference back so I walked out with £3.84 cash so I effectively got two for £3.08.