Accuracy is not required......
Unfortunately, the requirement to ensure data is accurate does not apply to all.
Take for example one of the large original banks. Two years after moving into our house and sending back numerous demands for cash - which you could see through the flimsy envelope - we exercised our right phone the bank, talk to their Business Banking department, advise them that their customer had moved out previous and read the account number and address through the address window of the envelope.
Despite threatening to call the police on us as we had breached data protection, over the next few months us getting a knock from collection agents and us proving to them and the bank that we now own the house; as it was a business-to-business loan, the bank was under no obligation to keep its details up to date and said it would keep sending letters and bailiffs.
I walked into their local branch with the letter, to their open plan business banking section and discussed the situation with one of their managers, in full earshot of all their customers. Their manager even got the same response from their own B-2-B banking team.
So no, the data protection principles on data accuracy do not apply to some call centres....
(This started sounding like a rant at ibmalone, it is not and merely a story to the contrary of the point of data accuracy)