I have mentioned this before; banks are good at looking after your money and giving you ways to spend it. They are not so good about helping you out of debt or giving you insurance advice. This is especially so at the teller level, which is where a lot of bank cover is sold rather than advised.
For example, 'Thanks, Mr. Smith. We've got your banking sorted. Would you like insurance with that?'
You have heard it before, possibly not the best thing for you.