A woman claims she bought a brand new packet of tobacco and opened it only to find a slice of bread.
Karen Thomas, 35, bought the Amber Leaf product in Morrisons in Brecon on Thursday, September 19.
She said she popped into the shop in the morning but was surprised to find nothing other than bread inside when she got home.
Ms Thomas, from, Hay-on-Wye , said: "I bought it but I didn't open it until I got in.
"When I opened it inside there was bread.
"I went and exchanged it.
"They weren't very happy about it - I think they thought I was making it up."
Ms Thomas said she has never seen anything like this happen before, but did eventually get a new packet of tobacco.
She went back to the shop during the same day and told staff what happened.
"It was eventually exchanged," she said.
"I was really shocked. It was £22.80 which is quite a lot of money.
"They said it was nothing to do with them."
But, even so, it's not the first time someone has claimed this has happened.
Back in May another man claimed to find exactly the same thing inside a packet of tobacco also sold by Amber Leaf.
The video of him reacting to the discovery was quite a hit on social media at the time.
When asked about the issue, Mark Yexley, head of communications at JTI (Japan Tobacco Inc) UK, said: “JTI’s production, packing and distribution processes are highly automated and subject to strict quality control and monitoring, therefore we can only conclude that the switching of any contents occurred after this.
"Unfortunately, this is not a new issue and is one that occurs from time to time where tobacco brands are targeted by criminals due to the relative high value.
"This scam involves the 'switching' of live stock for packs with non-tobacco material in.
"JTI advises all retailers to be aware of anyone who is acting suspiciously when trying to swap over any tobacco products that they may or may not have purchased from their store or if someone is trying to distract retailers whilst buying tobacco products."
