misleading and false names used.

I was called on the 6th of June 2019 from Mobile Talk, a Lady called Kerusha/ Kubashni mentioned she was calling on behalf of Telkom. She advised me on a great deal for R139 and once off activation of R150 which will only be done in Jul;y pro-rata as my first payment. i was called a day later by another lady saying i qualified for a 20% discount and i will only be paying R119 for this same contract. I received my phone and sim card on 13th June and i did not use the phone. i get a notification on the 16 th June and i was debited 3 amounts. 2 from Techzone( R119 and R149) and 1 from Mobile Talk (R150). my question is what the hell is this **** going on. They **** and mislead me on what i signed up for. i do not want this contract and phone. please help me on how to give this back, i have reversed and stopped the debits.