Unability use service is not a priority

I joined Rain Mobile Network in 2019 using their unlimited 17 hour off-peak data and had a peak-hour usage loaded as well. In November last year my mobile data has stopped working. I was unable to connect to any device using a hotspot or wifi. I ahve tried multiple devices with no luck. I used their secure chat service to report the problem when I was told that they had no solution and would escalate the matter to the product owners to resolve. A month went by with no response, when attempting to use the service again in December I had the same problem. I called their call centre multiple times as their lines were having problems and I could not clearly hear the consultants. Finally reaching someone I could hear I spent more than an hour and a half on the phone pushed from pillar to post by the consultant telling me to start, shut down the dvice, putting on the hotspot, putting it off, changing the device etc. with no success. After all my frustration I hung up and sent an email to express my dissatisfaction. By 1 January by next debit order went off and I still have not heard back from them. I sent another email asking them to cancel my subscription and provide a refund as I am unable to use the service. By 19 January I finally received a response. Emails went back and forth for 3 days when the consultant informed me that I had to cancel the service myself and they cannot provide a refund. When I questioned this I was ignored and I am still being ignored to date. I posted on their facebook page regarding my dissatisfaction and still have not heard anything from them. I am unable to return the debit order at the bank as this is a monthly subscription and no one at Rain is attempting to solve my problem or come with some sort of counter solution.