No credit card required
Browse credit cards from a variety of issuers to see if there's a better card for you.
Your mortgage is not reporting correctly but not for the reason you think.
When you and your spouse signed for the mortgage it was a contract to repay the loan. When you divorced your spouse the PSA (Property Settlement Agreement) was/is between you and your now ex wife. The PSA states the disposition of the assets and the PSA does not (can not) obligate a third party such as your mortgage lender to do something for you. Your ex can't make an agreement with you on behalf of the creditor(s).
It sounds like your ex violated the PSA when she failed to refinance the house. Your recourse is against your ex, not against the lender.
Having said the above, your mortgage (yes, its still yours up to the foreclosure) is not reporting correctly because it is reporting a balance and a past due amount. Dispute first with the CRA's the reporting of the tradeline because it is not showing its accruate status, payments and dates. Then dispute with the OC if the CRA doesn't correct. Keep all of your records for the mortgage and the foreclosure as you will need to disclose and explain this foreclosure on any future mortgage applications. If you read the mortgage app it will ask if you ever had a foreclosure. See the app here https://www.efanniemae.com/sf/formsdocs/forms/1003.jsp