Liberty Pension Pay-out delay with no notification

I have had a rather unpleasant experience with Liberty. I submitted my documents for my pension fund to pay out. Three weeks later I contacted the broker to find out why I had not received my money (after he had told me it would take up to three weeks). Suddenly there was a problem with the signature which was being sorted out... Why was I not notified about a problem that would delay my payment? Why was the problem picked up so late? Now I have to wait another two and a half weeks. I am incredibly frustrated as I made plans with that money which are now also delayed.