By Charlotte Beugge

Even though many Brits will be depending on their credit cards to get them through the financially difficult weeks after Christmas, nearly two million say they are fed up with the poor service they get from their card provider.

But not all credit card companies are serving their customers badly. High street giant Marks & Spencer's M&S Money Card, which offers 0% on purchases for 15 months, topped the uSwitch survey for customer satisfaction, followed by Co-operative Bank and American Express.

At the other end of the scale, Vanquis - which offers cards to those whose credit records mean they can't go to traditional operators - and Bank of Scotland were bottom of the table for customer satisfaction, closely followed by high street giants Barclaycard, HSBC, Halifax, Lloyds TSB and Santander.

The survey also found that Britons are cutting back on the number of cards they hold, with a quarter having three or more cards compared with a third last year.

And despite gripes about customer service, more than a third of those interviewed had never switched their cards while a further quarter hadn't switched for more than five years.

This will be a concern for card companies which are falling over each other trying to tempt in new customers with deals.

In recent months, the battleground has been focussed on the length of 0% balance transfer deals with Barclaycard currently winning with 24 months interest-free.