An eight-year-old boy is boycotting Walkers crisps after he wrote them a letter when he found an extra ingredient in a bag of the cheese and onion snacks.
Wilf Birch is refusing to eat any more crisps made by the Leicester-based company after the firm did not respond to the letter which his mum posted on Facebook and Twitter.
His mother, Sally Birch, of Knighton, said she had messaged the company on both social media sites about the foreign object in his crisp packet but had not received a reply.
The 31-year-old said: "I am quite shocked and surprised that they did not respond to Wilf's letter.
"I posted it on Facebook and messaged them on Facebook and on Twitter but nothing.
"Wilf is upset and refuses to eat any more Walkers crisps. He use to have them in his school packed lunch every Monday and Friday but not now. He has another brand.""
Mrs Birch said that her son wrote a letter after finding a large lump of what looks like a biscuit in a bag of cheese and onion.
She said: "We had gone to Rothley rail station to see the steam trains and we popped into the cafe for a cup of tea.
"Wilf asked for a pack of his favourite cheese and onion crisps.
"We sat down in a waiting room and he started to eat the crisps then found the object.
"He said he thought he had won a prize like in Charlie and the Chocolate factory. It was so sweet.
"He thought it was free biscuit but I told him not to eat it as we did not know what it was.
"He asked me what it was but I said I did not know. I told him to write to Walkers because if anyone would know it would be them."
In his letter Wilf, who goes to Overdale Junior School, in Knighton, said cheese and onion are his favourite flavour.
He says: "When I was eating my crisp I pulled out this massive lump. At first I thought I had won something then a buis cit.
"But my mum said not to eat it because it shoudent be in there.
Now I don't fancy eating my faivoroute crisps any more which makes me feel sad. Please tell me what it is and what went wrong."
A Walkers spokesperson said: "We're really sorry for the delay in getting back to Wilf.
"One of our team will be getting in touch with his mum so we can investigate this further."