I bought a Note on a property using my Retirement ...

I bought a Note on a property using my Retirement funds through BuyPD. I got interest payments deposited into my account for 2 years, then they stopped in September 2016. I have been calling BuyPD, Accuplan, American Estate and Trust, Note Servicing, Insiders Cash and getting nowhere. I am worried about my Retirement account.

Some of my money is just cash which I am trying move to a more reliable company, but there again I am getting the run around. They keep saying that they have not received paperwork for the Transfer.
They are fast when it comes to taking your money, but will they ever let us take it out?
Watch out.