Am denied a home equity loan on false premises.

My bank from which I’ve had a home equity loan for over 10 years that I’ve just paid off with no missed payments has denied me a renewal on the false premise that I have too many outstanding balances ( I have none). I asked the bank (Fifth Third) to list them to which they never responded. I was asked to fill out another request nearly a year later and this second time I was told I didn’t own my home which I have owned for over 50 without a mortgage. I asked the bank tell to me who owns my home on which I recently paid off a 10 year home equity loan from their bank. Once again no response. I also own a home in Key West with no mortgage, My credit score is around 830, and I am an 84 year old widow who owes no money. Even my two credit cards are paid off every month. Fifth-Third refuses to explain the basis of their unfounded denials.