Remove my missed payment for May 2023 !!

I don't know how many times I have to contact and run around asking Vodacom to fix the mess they have caused. I am taking this case further, this has been coming on since April, it is draining and a waste of my time but I have to fix this as I can do nothing with a bad credit score. Your accounts department are giving out the wrong advice now its impacting me negatively. Fix this mess !!!!!!!!