Bad service rude agent

On the 4th of October i spoke to kabelo who assisted me with my account, I paid R180 on the 4th to have my account reconnected I further requested kabelo to change my billing date to the 7nth of each month of which he said he did today my service inactive I made contact to multi choice and spoke to jabulile on the live chat who is very rude and lacks interest in providing assistance to what my enquiry is about, I wanted to make payment today so I enquired as to why is my bill amounting to R198 she told me that I have been billed for the grace period that multi choice gave me due to non payment on the 7nth and today is the 8th so I ask her when was the grace period granted because my services are inactive currently so I don't understand when it was given, she then told me that I am being charged a service fee of R24. 90 and that last month in October I short paid my account I then asked how because last month my bill was R178.53 and I paid R180 so how is it that I short paid, I then furnished her with my proof of payment for last month she now says I'm being billed an extra R12, 95 for an overdue bill on top of that she is not showing any interest in assisting me she keeps on asking me if is there anything else she can assist me with even when I tell her that I still don't understand she needs to be more detailed because now multi choice is billing me unnecessary I even asked her to request her team manger to call me back to that I can have this matter resolved and I can pay she just gave me an email address which she says it's her managers email or I can directly call the call centre there after she rudely ended the chat