incorrectly billed twice and no follow through action on cancelation

Been trying to cancel my fiber for 1.5 months now. This is the nonsense they keep telling me but never getting back to me about.

11:22:44 AM Andile Clementi: I will forward your request to cancellation department and then they will contact you with the feedback of the canceation please ensure that the provided email address and contact details are correct as that is how you will get contacted 11:23:05 AM You: thank you 11:23:21 AM You: how long will this take 11:24:36 AMAndile Clementi: A request has been sent forward to cancellation department, please await further feedback and they will be able to advise you further 11:24:40 AMAndile Clementi: Is there anything else you require assistance with? 11:25:08 AM You: yea i need a timescale please 11:26:16 AMAndile Clementi: Please await further feedback and they will be able to advise you further