Tesco is a large UK retailer. Recently a Telecoms business using its name (likely under some commercial agreement) ran an advert on Twitter, trying to compare its pricing against larger telecoms firms.
When consumers started to criticise its pricing on food items, it came back with the following reply.
But, quite rightly, consumers were not convinced. As far as they are concerned, if you have Tesco in your name you sell food and petrol.