Upgrade department need to wake up!

I have been a Vodacom customer for 20 years, in March 2018 the Upgrades department phones me to upgrade my Tablet account. No problem but they say they will also reduce the cost on my Data line ( ********** ) Instead of doing that they change me from a 2GB open plan to a Top Up plan, messing up the Twin Sim function my wife and I had on this line. I phone Vodacare on the 18th of April. Thabo change me to a 5GB Open plan, happiness again. He told me to go to Vodacom shop after 1 may to arrange for new sim for my modem the I can use my laptop again. Today I went there, no can do, there is no history on this number that we ever had a Twin Sim, how can that be? So once again I phone Vodacare. Andiswa say that she must log a Service Request and I must wait 7 - 14 days for the Contract Admin to do whatever. Sorry, no can do. In the meantime I am paying for something that I cannot use!!!