Instalments of R3125.00 build up when I was disconnected what exactly I am being charged for?

I am new on rain wifi started end of 2024. When I took up the Wifi I was told that it works like pay as you go, where by im debited and you provide me with Data. Due to financial reasons from march I sent a request to ask to cancel I never got a response. There has not been any money in my account and the debits do not go through as I asked to cancel the service, and there Wifi has been off since end of March or April when you check your records you can see you have not been allocating any data to me. But to my surprise yesterday i seeing that its showing me that im owing R3125.00, why am I charged when I’m disconnected? can someone please work on my statement and explain to me I would understand if my wifi was online so I am owing rain in this case what I am owing if service was terminated due to non payment. I have tried to get someone to call me back thru the watsup option and the online option but no one is calling me back . There is no direct call center to call for quick query resolution. Please cancel your service and come collect your wifi portal ASP. Regards Sharon