The policy is very poorly worded. I can understand the confusion.
I copied and pasted their policy in a pervious message. I also called the EC hotline and asked them last summer.
Spouses, family members that have the same address and same last name are not charged to be an additional driver, they don't have to sign anything and it is an automatic benefit.
I can tell you, from personal experience, that the folks at MCO are NOT brain trusts. I had a reservation confirmation that I handed the girl at the check out booth, she looked at it and asked when we were returning the car ( I shouldl have known I was in trouble then), I said it is on that piece of paper you have in your hand.
She plugged in numbers and ta da, I now have a rental rate of 200.00 more than quoted. The reservation was marked as a no show and this mental midget had made an entirely new reservation. It took better than an hour to fix upon our return (between the garage personell and the counter person). I can tell you, I was annoyed and did write a letter to National corporate, they sent us a 50.00 voucher for a future rental.
I do understand that mistakes occur and I do understand that they often don't train their people very well, but, this really made me angry. This, IMHO, was not an error, it was because of not training properly and hiring someone who has less brains than a gnat.
Sorry for the rant, but, I really hate seeing people jagged around like you were.