Thousands of Vodafone customers have had their service cut off after the company suffered a break-in at their exchange centre in Basingstoke.
Armed raiders smashed their way in to the building in the early hours, stealing and damaging equipment.
As a result many users have lost voice, text and internet connection, with Twitter estimates putting the number of those affected at between three and seven million.
Vodafone said in a statement: “We had a break in last night at one of our technical facilities which resulted in damage done to some of our equipment.
“We are working quickly to restore these and will be back to normal as soon as we can.”
Customers vented their frustrations online, with many posting complaints on Twitter and Facebook.
One wrote on the company’s official Facebook page: “You would think that such a massive phone company would have better security than this.”
Others called for the company to pay compensation to all those affected.
Vodafone insisted that the number of customers affected is around “several hundred thousand.”