Very in happy customer

My name is Lithemba Njisane,My mom sold her house a couple of weeks ago and had the money transferred to my new Absa account. Last week Thursday on the 20th of February the bank account was blocked. I was contacted by the Absa ***** department and I was asked to submit where I got the funds which I have done and well as the person who paid the funds to my account has submitted proof where she got her money from which is from GEPF. What puzzles me now is Absa wanting the proof to come directly from GEPF and which in this case Absa is a thirdparty and GEPF will not deal with a third party. We do not understand what the problem is,as we have submitted all the relevant documents that were requested.