Continued charging for a service I cancelled and have not refunded me

I cancelled my Rain contract after I had very bad internet service for a month, I received a confirmation email on 7 July 2023 confirming my cancellation reading:

'As per our telephonic conversation you want to cancel your service immediately and want refund, as we can see in our system you have 5g service, we escalate your issue to our team for immediate cancellation and refund, they will be work on your request.' Reference Number: ***

After this email I unplugged my Rain internet and have not used it since. (which the Rain consultant confirms on their side)

I then see that Rain continued to bill me for August, September and October, after calling/emailing them several times they only arranged to pick up their device on the 5th October 2023. I have yet to receive the refund for the month promised on my cancellation email or the three months where they have charged me *****ulently.

3 October 2023 - 'Please note your request for immediate cancellation has been send to relevant team . You will get your feedback when its done and also with your refund for the months that we have been debiting your account'

Reference Number: ***4 Reference Number: ***8 Reference Number: ***9

I have not received any payment from Rain as of today 7 November 2023

To add insult to injury, today I received a call from Rain offering me some sort of offer on my contract (which again I have cancelled) Reference Number: ***1

The lack of care makes this company a huge red flag and I can only describe them as ****mers, who will take your calls, continue to bill you for a service you are not using and do nothing.

DO NOT USE THIS COMPANY