financing rv

Here is as slight problem that I had. Purchased a used class c from dealer and needed financing. No problem, I thought, my credit score was 803 and I owned my home outright and had a good retirement income. I was 72 at the time. Dealer said first bank refused me, but second bank accepted and even had a lower interest rate. Contact with first bank and they reported the refusal was because I did not have enough collateral. Again I owned my home !!! The real reason, I assume, is because of age. Probably thought I would not live another 10 years. Of course they could not say that as it is illegal.