Rain cancellation process is a ****

I called in September to cancel a rain 4 G SIM card that has not worked in months. I was assured that it was cancelled. Because this has happened before with reason i called again in October because i was charged the monthly fees. I am getting notification that rain is attempting to charge my card again inclussions an old card that was on the system and was removed, so this not only violated so many popia rules but it is a total **** ! I called again today only to be told there is no record of me calling to cancel and that this would be escalated and they have no idea how long this process would take. The previous sim took two months to cancel after they had already collected the router. I am still waiting for a refund !