Call Center Agent MISADVISED me and now I am severely inconvenienced

I had a 120GB LTE package with 3 multisims attached to it. I needed more data so I asked for a callback on the telkom website and got a call from online sales. The first lady that assisted me seemed to know exactly what to do and told me that everything will remain as it is just with more data, the 180GB LTE package. A few days later I requested another callback as the package did not activate. When I spoke to another lady this time, she insisted that I will loose the other multisims but will have to goto the Telkom shop for activating the other Sims. I mentioned that the other lady told me everything will remain the same but this lady insisted that it is like this and the other lady was misinformed. I accepted it as such trusting that she was well informed and went ahead with the migration. I then went to the Telkom shop only to be informed that there is a problem and I cannot get the multisims as I now had a TOPUP and bo longer an OPEN LINE which allowed Multisims. I now sit with a major problem as I was told changes can only happen after 3 months and it was only 3 days old. I called the call center and was told its impossible to change and a message was sent to the second lady who activated the TOPUP to call me. I have yet to receive a call. I am utterly disgusted that telkom has put people in online sales that don't know what is going on and misadvising customers. I now sit with the problem with no solution in sight.