Angry Tesco customers have swamped the store’s website and call centres with complaints over the way a Christmas loyalty card promotion was handled.
The Big Christmas Exchange deal offered to double the value of points and vouchers held on the Clubcards used by millions of customers.
Customers had until Sunday to claim the double-value vouchers offering big savings on products such as toys, clothes, champagne and the new Samsung Galaxy tablet computer.
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Tesco Clubcard double-your-points Christmas promotion turns 'into chaos' | Mail Online