POOR SERVICE AND BAD ATTITUDE

In January 2015 my husband submit his application by hand at the Johannesburg office. They confirm that all the documents are in order and the will start processing. Two months ago (May) my husband phoned them to find out what the progress is regarding his profident fund. He was told that they are busy processing the claims as they speak. Today 28 July 2015 he received a letter from MIBFA telling him to verify his details. He phoned them immediately and they suddenly do not know what he is talking about and hang up the phone while he was explaining. Please help. What can my husband do???