Incorrect bank statement submitted to vodacom by sales person

On the 16 of August 2022 I took a contract phone “ IPhone 13” which it was under vodacom promotion. I was assisted by Bongi Nhlanhla Tshabalala. Submitted all documents and I was approved received my phone, went to vodacom shop to pay activation fee and took insurance same day. The guy at vodacom explain that the first instalment will be deducted next month.Now September comes no debit order goes through, I waited till end of sep nothing is happening. On the 5th of October called the vodacom call centre to find out ways happening and the agent explain to me that the deduction date was the first of each month, I failed to understand that coz when you sign a contract the sales person ( Bongi)ask when would u like debit date “ and I am 100% sure I did mention the 25th of each month hence it’s my pay day. Anyway the agent from vodacom changed the date and asked me if I will be able to pay the two behind instalment of which i I did not agree hence I work on budget unlesss he breaks down the amount into two of which I end up agreeing to that and the amount should be debited on 25of October. Today 2 November I received a call from vodacom collection department and they telling me they never received any money from my account so I asked the lady to re check my details because I fail to understand why there’s no money being debited. Only to find out that they have capitac account of which I Fail to understand that coz when I submitted my documents for application my Absa 3months bank statement was there included with my payslips so why capitac??? Then I went to incredible store I asked to speak to the manager and Tebogo came for assistance,explained everything to him then he said he will investigate then give me feedback. After an hour I receive a call luckily I was still around the mall but it was not Teboho but a woman by the name of Bongi the one who assisted me on first place by taking the contract. Her arrogant tone asking me why I went straight to the manager to report such hence she was the one who was helping me ?? Told her am still around the mall am coming to speak to her indeed when I got to the shop. She explained rudely to me that there is nothing they can do because already my details were there on the system when I app**** for the contract and she just submitted what she saw on the system. Yes she’s right by saying my details are on their system because I onced took a cellphone contract with them 6 to 7 years ago!!!So my question is whose is Responsible to check the system details and updated the documents handed over by client to verify if they still the same?? 2 when I gave her my ABSA statement including my payslips clearly she didn’t follow up the details hence she was supposed to confirm if the salary appears on my Bank statement.I believe there a steps and protocols that need to be followed before sending applications for approval. 3 whose suppose to take Responsibility of all this coz the way she was so highly rude and arrogant in front of other clients who were there at the shop that time telling me she doesn’t care I can do what ever I want. Funny when I asked to see my contract the Absa bank statement it’s there!! Am so Frustrated,Angry and Dissatisfied on this .my name is now going to be on bad record unnecessary because of ssomeone who didn’t do their job correctly. I need this to be fixed with vodacom ASAP and the will be no penalties I will be paying on the errors. And I would request to take back Bongi Nhlanhla Tshabalala back to training clearly if she can’t even Respect her own Manager then we as clients who are we??