Just pick up the phone ???

Good Grief you would think that a company such as Vodacom in a leading communication trade would invest in appointing someone , anyone for that matter to answer a phone . My line has been cut almost a dozen times this month when i call in and get no answer an eventually drive in i am told my account is paid up they cant see a reason why the line was blocked and then unblocks it the next day same story . I'm trying to get hold of someone in a superior position able to unblock my account and kindly answer the phone and if they wish provide me with an explanation of the repeated block reappearing on my line day to day