Vodacom service have no consistency. Being send from one person to another...

I have received a phone call to upgrade my account on which I asked options and asked the operator to call me back after a day or two. After a while, I received a call and again they wanted to upgrade my account. When I told them what I want, they all of a sudden said, my account is flagged and I need to go to a branch. I went to the Klerksdorp Mall branch, they said they cannot help me, I need to call Vodacom to unflag me. I phoned in again, and again they said I need to go to a branch. I went into the Lichtenburg branch, and they said they cannot help me, as I need to call 082 135, they will be able to unflag me. Today, I phone the number again, and again they said I they cannot help me and that I need to go to a branch. So, now I am stuck. One of my contract expire (or already expired) and I cannot manage it, because no one can... This is unacceptable. I cannot even access the Vodacom App due to the flag. I am paying for contracts that I don't need anymore as my children are overseas, but I cannot cancel or change it, because I am being send from here to there!!