My Bottom Line: Dido Harding, TalkTalk Group
Dido Harding is chief executive of the TalkTalk Group, external. She gets frustrated by businesses which convince themselves that they know what is right for their customers - ignoring what customers actually ask for themselves.
One thing she finds annoying is when an agent tells a customer 'I'm sorry, I'm not allowed to do that' - code for 'I know you are right, but my managers disagree'.
She says it is integral to build businesses which are founded on customers needs - even if this means completely reorganising a company.
Dido appeared on The Bottom Line which is broadcast on BBC Radio 4 and BBC World Service. Subscribe to the podcast or watch it on the BBC News Channel.
Find more business wisdom from other chief executives on the My Bottom Line, external website.