This is my 3rd complaint regarding the same issue which is still not resolved

This is my 3rd complaint regarding the same issue which is still not resolved. The 2nd complaint Vodacom didn't even bother to contact me. They promised the incorrect account will be corrected. Contract Smart L line was canceled in August, however we are in October and it has still not been resolved. Also i provided them with the correct address for delivery of my sim card. And they still sent the courier to the incorrect address. Vodacom experience is like pulling out wisdom teeth. Very unpleasant. Please can someone who knows what they are doing assist me.