absa case management and complaints devision (Vijay Narain ) who cannot use a computor

i have been billed triple what my monthly installment should be on my vehicle finance, despite having sent proof of insurance several times in PDF format on request and even sending them the update policy last month, they still refuse to refund me and to update my details correctly, the agent 1st claimed that they did not receive my documents then i sent the documents directly to him and he didn't respond till i sent them the second time and he claims he cannot open the PDF and wants me to change the PDF documents into PDF, i need this resolved today, i cannot continue suffering financial loses because of someone else's incompetence and ignorance. absa management needs to resolve this today.