disgusting service

Good day Trust you well.

Kindly be advised that I have purchased a phone Samsung A05 at pep cellular at the Chatsworth branch (Fone YAM) on the 08/11/2024. The phone was R2000.00 and I paid a dep of R600.00 there after another R150.00 beginning of December 2024. The phone stopped working (the charging pin did not allow for it to be charged) before it reached its first month anniversary, The next instalment was Due on the 15/12/2024 for R248.00, I went to Pep stores in Pinetown ST. Johns I advised the cashier that this a rental phone with pep cellular Fone Yam And explained her that the phone is not working, and I was told that in this 12months if anything happens to the phone they will repair, The cashier asked for the receipt, but I was unable to provide the receipt has I could not recall where I had placed it, I did advise that this is a rental phone, and they do have my info and see on the system that I did purchase from Pep., she then said she can’t assist me, so I did not pay the instalment. I was very frustrated because she needs the receipt to accept my phone to repair but don’t need a receipt for payment. There after a week later I receive a call from their customer care about the payment, I advised the agent of the situation and said they need to repair the phone and I can pay for it, he just said OKAY and disconnected the call. Yesterday 02/01/2025 I received another call, this agent was rude I explained her what happened and asked her how they can expect me to pay for the phone they not willing to assist with repairs, she said I must go to the store pay December 2024 Instalment and the pay cancel fee, when i tried explaining i need my phone and don't want to cancel she disconnected the call

This is unacceptable as I want to pay the monthly instalment, but they refuse to assist me.

Please advise next step