USAA NSF Fees when funds where there, currently claiming I owe when I have a ticket number in which I paid off the balance San Antonio Texas

I was a 10-year customer/member of USAA.  I have been having an atrocious experience with USAA since I notified them of my separation (I am now legally divorced). I have spent over 20+ hours on the phone in the last 2 years, my credit rating was affected, I have been nikeled and dimed to death with NSF when the funds were there or in process, the business units do not work or talk to each other, finger pointing even though I bundled products, and I had enough, I thought I was finally rid of them when I called to reconcile/pay to the end of the term, my auto insurance, and now I am being harassed yet again for funds. 

Even though I have a ticket and claim number/along with their recordings that I was attempting to do the right thing and leave them well and pay off my balance with the call.  Further, there is no email support, I have uploaded documents/screenshots of funds being taken from my account, the harassing emails, etc.  Yesterday while I was taking my recovering from a stroke uncle to a doctors appointment, someone from the CEO's office was calling to help me with my "billing concerns" and I reminded her that I did not have any and that my bills were paid, my accounts were closed (checkings/savings/home loan) and remaining auto insurance balance was paid (Insurance through Dec 18, 2021, as of Oct 08, 2021, confirmation #3472912747) and I would be done with them for good, and they are claiming I still owe!!! Can you help, or please advise who to contact.