Cell C Bad Service

I settled outstanding account in April and on the 30.04.2021 i receive my paid up letter which is excellent. However it is the 02.06.2021 and yet Cell C has not updated my info with Experian it is still showing a Default on my name and an outstanding balance.I call the Call Centre and i speak to an agent he assists me but i also had to explain myself over and over .He put me on hold to speakto a Team Leader which has the cheek to tell the Agent i should call Experian.I dont mind doing it but how is it the consumer's duty to do the updates is that professional at all.Im not happy about this Cell ,Please train your staff and lazy Team Leaders i need this resolved asap.