Absa vehicle finance- unfair process

Good day, I have received a call from Vehicle Finance with the agent from the Bank threatening to repossess my car. There was no fair notification on this or any written communication ( e.g Section 123 letter of demand) . I have since requested the person to send me communication around this and timelines. He had requested I make payment within a day of receiving his call. And this is despite highligting that I have been unemployed for 6 months and only started a new job recently and I am committed to making payment in January. I think this is not a fair process based on current regulations. Please can someone contact me to clarify the process. I have reached out to the person who contacted me but no feedback so far