Impossible to contact accounts managers

Seems like before the ink is dry after signing contracts, the sales staff have forgotten you. Been trying to get hold of an accounts manager for our business as we have many contracts only to end up with poor call center staff that can only advise I go to the store where contract was opened or some sort of PIN. Since I have taken over recently, none of this info is available but the dead end is acceptable.

Is this the way businesses works whereby we have to run around the suppliers and not focus on our own business at hand? Who is in charge now as they are slowly putting vodacom into the ground with stupid service like this. Maybe management needs a refresher course on business school or just simply new management all together.