Billed incorrectly on notice fees

So I cancelled my ADSL line on the 9th of Jan 2018 gave my 30day notice as I was on a month to month package that I paid R589 for PM.

middle Feb I get a bill shock of R1724.98 a triple charge of notification fee for cancelling my line.

even tho I should have no notification fee due to me being on month to month.

So I logged a call on the 12th of Feb them saying yes they can see its wrong they will send it to be corrected someone will contact me in 10 working day.

so those days have passed and yesterday I called spoke to a very helpful lady who did her job and sent it to a manger who was suppose to contact me by C.O.B on the 26th of Feb guess what this morning I had to call again cause no one called me I requested to speak to the supervisor who frankly is no help at all and he said " I was miss informed someone will contact me during the week"

No you don't understand my frustration you Telkom have had more than 10 days now and no one has even attended to my issue.

pathetic service