The Office of Fair Trading has wade into the row over Groupon’s marketing practices by dubbing many of the 6m emails it sends to Britons each day as misleading.
Groupon was referred to the OFT by the Advertising Standards Authority over complaints of exaggerated savings, firms unable to honour orders and unsubstantiated claims over beauty products.
In a statement Groupon said: “Many of their suggested changes were already under way, and the rest we will implement with haste.
“To the Groupon customers that experienced the negative side effects of our growth: we’re sorry. We believe that the only way to build a company that lasts is to provide the best customer experience in the world, and it pains us when we fall short.
“Our commitment is this: we are going to get this right. We won’t stop until we are known for having the best customer service in the UK.”
If the daily deals site fails to act on these areas within three months it could face legal action and fines.