Benefit Wallet Unlawful and Unjust Conneticut Nationwide

I've received a letter from the company stating I have money missing from an old HSA account (walmart) and I will need to update my address to receive my disbursement check. I've called since July 2015 and was promised to wait until 20 days. I've waited and in August still nothing. I called and was promised it would expediated and overnighted to me and that was lie. Then I was told the adress was never update. I provided the information again it is now 21sept15 and still nothing. I just spoke to a Michael at 1035am who promised again I will recieved a call back from a supervisor. I am utterly upset and would like to file a formal claim. I will be contacting the BBB regarding this issue as well. 

Also, i was provided with my account number to gain access online and 2 days later the access was denied and no emails or phone calls were returned.