Business ProfileforNorth Country Federal Credit Union

My latest issue with this credit union revolves around closing my accounts with them. I paid all loans and the credit card in December and January timeframe. The credit card was paid (at the branch in **********) on 1/26/22 at 14:48:02 EST. Today (3/22) I received a letter that they need to speak with me regarding a balance on my credit card. Interest was charged after it was paid in full as well as late fees. No statement was sent. I could not access my online account after the accounts were closed as this was shut down. I had requested copies of my statements for 2021 so I could do my taxes which I never received. I went into the bank and closed all my accounts in full and was not told more interest would be charged after the account was closed and paid. I should not be charged interest when the account balance was $0 as well as late fees for an amount they did not notify me of until months after the account was closed. I spoke with them on 1/28 and 3/3 regarding my accounts and was not made aware of any balances remaining. I was closing my accounts after I was charged (without notification) a fee for insurance because they claimed they didn't have proof of insurance which was emailed twice. On another loan which I took out in March of last year, the escalated the interest rate from 4% to 12% in December because the didn't have the title. This was all done online and apparently the business I bought it from never sent it to them and they realized it 9 months later. Again, no notice just an increase in the interest rate. I found another credit union. It took several calls and visits to the bank to close my accounts. When I paid the credit card, I had to leave my checking account open until the payoff cleared. I closed all accounts and received the balance remaining in my accounts again with no mention of any interest to be charged on closed accounts. I don't believe I owe them any more on these accounts. I would like copies of 2021 statements too.