I would keep quiet - did you get the CS name? If not record the details of when you rang them....could be that the CS you spoke to looked at the wrong screen....
BTW - I'm a great advocate of the Say no to 0870 website :
http://www.saynoto0870.com .... sorry but when a company says we care about Customers then call us with any problems and you pay us while complaining it really p&*1es me off.......