Rude and unacceptable client service

Im so annoyed with the City of Cape Town vehicle registration department. I registered my mothers vehicle online who is 74 to make payment for the renewal of the disk on the 18 February . I only got confirmation on the 18th March with reference number 19***. Then following various calls to the office the same week as they say that the whole transaction will two days upon responding i called and was told theres nothing they can do and she hung up the phone saying they have a backlog. Then i called again asking for the invoice for payment and was told they dont know when it would be sent theres a backlog. I eventually called again two days later and was told that my email was sent to the wrong person jackyv after my email was on the registration document following which Delphine Borman sent me an email declining my application on the 11th April saying i should have chosen the option on behalf of someone and they closed my application. This after a month with no explanation. I called today on the 15th April asking how else i can pay this disk as i wont be responsible for penalties and this woman tells me that i have an attitude and need to check myself. How dare you i want answer