Poor Service at vodacom

I bought a phone here at Savannah Mall Vodacom Store at Polokwane on a contract on Tuesday, and asked them to do a sim swap for me , when i got home after waiting for 3 hours, there was no service. I called the Vodacom free line, I was told that the sim swap was not performed on the new sim card. Since it was late i was advised to call in the morning the next day. When i called, they couldn't assist me, because apparently i was given the wrong sim card(prepaid) instead of the contract sim card at the store. I told the vodacom consultant that i'm going to need transport money cause i am not the one at fault. She said i will be compensated when i get to the store. I get to the store, and store manager tell me that they can only compensate me with a R64 contract sim card, while i paid a car for R460 to come to the store and fix the problem that was made by them. I told the consultant that my mom uses crutches to walk, hence i have to hire a car to the store. I had an argument with Aus Katlego (store manager) and she said we must leave the store because she wont help us. We are just sitting here unattended and we dont know what to do. My mom's leg is in pain cause she cant sit for long. So I am asking Vodacom what must i do? Who must help us?