Esure

Around 30,000 Esure and Sheilas' Wheels insurance customers have been mistakenly billed twice on direct debits this month, but the parent firm has promised to refund all affected policyholders by tomorrow.

Changing a name, address or job title on a car or home insurance policy, or cancelling it completely, can result in costly administration fees of up to £55, but you should challenge excessive fees if you think they're unfair.

Consumers should watch out for costly fees when cancelling or adjusting details on car and home insurance policies.