Vodacom failing to assist me

I went to Vodacom Last year December to Buy my sister a Phone and i must say am not that clued up, i got the phone and i was happy but when i discussed this with my sister she advised that cant i get less the one with 128g and less data bundles because its too much and looking at my fanancial status it was bad i then went back to Vodacom and asked the lady who assisted me to get me the one with less space and less data bundles so the premium can decrease she told me she will discuss with her manager.

My sister then called the store to make an appointment with the manager and they set the time and date to our disappointment when we got there the manager had already left and we decided to leave the phone and asked for the manager to call us and advise when he would like to meet with us to this day i haven't received a call and i cannot afford to pay Vodacom this is breaking my heart that no one is willing to help nor advise me on what to do next. On the other hand Vodacom has escalated me to their legal team i need help.