Desperate customer since 1976

I am a customer with Vodacom since 1976 and trying to do an upgrade on one of my contracts ***) for more than a month now I have even gone onto Hello Peter and received a call that got cut off and heard nothing since then. I am now desperately trying to get this sorted out and whenever I call in I get told they will call back and I hear nothing more. LAst call was this morning to a Louisa Baloyi and was told that by 14h00 she would get to me time now is 15h30 and no contact, this is the same story all the time, what service! Correction no service is this what we can expect from one of the biggest service providers in SA, I think not. Where to from here, over to you Vodacom! Regards Vinny La Bella ***.