Vodacom refuses to assist with UPGRADE since November 2018

I have been trying to do an upgrade since November 2018. I have been to the Sandton City Branch where I was advised that I needed to contact the customer service center as we needed to update my portfolio information, I did this, not just once, by 5 times, every time I was advised that I needed to contact a different department for assistance, I did this and I still have not heard back from Vodacom.

the sandton city branch staff were also supposed to have contacted me, but I have not heard from them. All that I want is to do an upgrade for ********** 128 and change the package from an open line to a top up package.

I really believe that this is sheer laziness from the staff at Vodacom.