READ: One Irish woman’s viral tea-related Facebook rant to Marks and Spencer

Marie Byrne took to the UK retailer's Facebook page to complain about an incident involving her elderly parents that took place in the store's Blanchardstown branch.
She explains that her parents were in the coffee shop for a pot of tea and on finding it a little weak for their taste and asking for a second teabag, they were told they'd have to pay for it.