Debiting more than a year after cancelling service

I truly cannot understand the incompetence of the individuals and management of this organization. I cancelled my 5G subscription on the 26th October 2021. More than a year ago, i really had no problem with the 5G but i was moving to new home with fibre available. I received confirmation that my sim was cancelled on the 26th and a courier was arranged to collect the router which happened a day or two later.

3 months and 6 months later, I receive calls from CCD couriers to arrange collection of my 5G router? I had to then send them proof that this has already been done months ago.

Now more than a year ago i am getting debited by Rain for god knows what reason? Can someone at Rain please get your act together and sort this out. Since i have no subscription i cannot even find a link on your site to contact some support.