Cancellation of month to month 5G free to use route contract

Very bad experience with the cancellation process on my 5g month to month subscription. I have given notice of Cancelation on the 16th May 2020 through their support contact centre. No one even bother contacting me regarding the cancellation request. Since then I kept sending follow up requests every second week. I disconnected the unit on the 1st June 2020. On the 29 June a Wayne contacted me asking me if the unit has been picked up already. I rep**** NO whereby he informed me the next day that the cancellation can only be done once the unit has been picked up. It seems that as long as Rain doesn’t collect the unit I have to pay for the Free to Use Unit. I had to cancel my Credit card to avoid any further deduction from Rain side. Rain where very quick to contact me on the 1st July to inform me that I have missed a payment, yet they can't arrange to pick the unit up. I suppose Rain will wait till end of July to contact me again.