'Credit-score company encouraged me to borrow again when I was nearly debt-free'BBCA woman who had a £10,000 credit card debt has told BBC Panorama how a credit-rating service, which she thought would help her bring her finances under control, encouraged her to take out yet more cards. As well as keeping track of her credit score, the ratings firm - Experian - bombarded her with emails promoting high-interest credit card offers once she came close to paying off her debt. Millions in the UK are struggling to keep up with card repayments, but consumer groups say offers of extra credit - including from credit-scoring companies - can make matters worse for already vulnerable people. Experian told Panorama it has been developing a process to identify potentially vulnerable customers and to stop sending them marketing emails. The options it sent the woman who spoke to the BBC, it added, could have allowed her to pay off her debt sooner or at a lower cost. Credit cards have never been more popular - about 35 million people in the UK have one, according to industry figures. The annual percentage interest rate, or APR - including fees and charges - can range from 0% to more than 60%.