Suspension of Pension

My pension was suspended Dec 2014 due to the fact that I did not attach a copy of my ID to my Declaration Form. The copy was posted on 5th January 2015 and has been sitting at Wandsbeck post office since 12th January. When I phone or query by e-mail whether the suspension is lifted, all answer I receive is that the form is not available. I have attached numerous copies of the post office track and trace site to prove that the letter is awaiting collection. The suspension of my pension fund also affects my medical aid, as part of my contribution is paid by die pension fund.