Calling nr's which was not listed

So on 28/08/2015 I emailed them to inform them to only contact me on my cell or email because I am unemployed so the work Nr is no longer valid and I don't reside at the adres where they keep calling te landline ... Relatives do so they pass the messages!!!!! If I list a Nr that is what they must call not invade my privacy by speaking to relatives!!! And funny they call the relatives on a landline which is not listed from my side but they can not call my cell ??? This is going against my human right and its breach of contract!!!! Brooks and Luyt attorneys should know that- I signed a contract with absa that they will deal directly with ME