It used to be the case that we have to worry about our parents being sold something unsuitable when they visit the banks.
Based on this story published in Today, we probably need to tell them to be careful when they visit the post office as well.
In this case, it is lucky that the son was vigilant enough to spot the proposal when it came in and managed to cancel the application.
Otherwise, his dad would have been switched to a plan that is less suitable for him.
Worse of all is that any pre-existing conditions would not be covered under the new plan.