The promotion offered 5,000 printable vouchers for Tesco’s Facebook “fans” to redeem a free Galaxy More to Share chocolate bar.
Customers took to the official Tesco Facebook page’s wall to vent their frustration when the promotion appeared not to be working, with some people saying they could not find the link to download their vouchers and others saying they experienced error messages when they clicked through.
A Tesco spokesman says: “We were delighted by the popularity of this offer and are pleased to have been able to reward 5,000 customers on Friday [1 July]. We are very sorry that due to very high levels of interest some people experienced problems with the site.”
The coupon printing technology was provided by Couponstar, which launched its social media vouchers platform, “Social Bricks”, earlier this year.
Couponstar did not respond to requests for comment in time for publication.
Matt Butcher, director at risk management company PIMS-SCA, says: “I’m surprised they [Tesco and Couponstar] don’t appear to have stress tested their software to see how it would cope under a lot of pressure – which is what you’ll inevitably get if you have a limited print run coupon offer combined with a message telling people to come and print their coupon at a specific time.”