NPDA accounts not distributed with payments

Have been paying NPDA to distribute our funds due to us being under debt review. I have never ever missed a payment, however December has been an absolute nightmare for me with MBD phoning numerous times in a day insisting I pay an account and the more you explain to them, the worse it got. Then I decided to sign onto my account and find that a number of my FNB accounts have not been paid Sept, Oct, Nov, Dec. I have never paid a lesser amount than agreed to, hence my question 'what has happened to my money?'. There is an account on my husband's profile and on their schedule that has never been paid at all, and the most frustrating with MBD was that my husband was in hospital from 22nd December and still is, so whilst your stress level are high with him being in ICU and debt review staff on annual leave, my hands were so tied. I sent numerous emails to our debt review staff once they opened and the one I received was 'you don't have to send numerous emails, I will sort it out myself' only to be forwarded to someone else. Most frustrating and no answers now as to if they have been paid or not.