staff incompetency

i have been using the payjustnow platform for quite some time noa and with no issues until December 2022, i normally pay myself i never let them debit and i am aware of their penalties should an installment be missed, now in Jan when itriesd to make a payment i got an error and i tried loging in using my sisters login and i still got the same error , and all of this i was doing it from my phone as i was on my work to work , after i just received a reminder from them for payment, i sent them an email expaining the error i was getting, there was no response from them, i called, i emailed no response untill one Zanele Hobongwana responded to one of my emails and i could tell she didnt understand my email, i explained and she called and again she was not willing to understand my query all she was after was for me to pay the penalty which i refused as i explained how i tried to pay but she was not willing to listen to anything i was saying, she promise to call but never called, till to this date none of my emais were repsonded to, i stopped sending emails, but then i still want this fixed as i dont want any negative rating on my score because of such things, please payjustnow fix this issue i have sent screeshots of the error message i was getting , you have all the proof i could provuise i dont know why you refusing to understand my issue, i would like to continue with yoursevices but i need this sorted asap so i can pay you what is due to you and not more because of yoye system glitches, im not willing to do that and i wont do it.