How to register Insurance refund invoice

[Alberto Dante]

Hi,
I need to register some Insurance refund invoices (eg. health expenses, 
car/home damages, ...).
The insurance companies pay the refund to my bank account and send to me 
a detailed invoice of the payment.
Which is the correct way to register the insurance company (business 
features)? Supplier or customer? And the invoice?
Without using business features, the following accounts should be 
involved (I think):

Assets:Current Assets:Checking Account:Bank Account
Income:Insurances refund

What about in case of business features?
Where I can find some examples?
Thanks, best regards
Alberto