Cancellation and Refund issue

I am so unhappy with the service provider that I will never use their services again. I cancelled my subscription on the 26th of October 2022. I realized that the service was not cancelled on the 3rd day of November and called Rain support where I was advised to switch the modem off so that I'm not billed for the month. Cancellation was only done beginning of Dec after I had followed up a number of times. I was then billed in December. I requested a refund the beginning of Dec after they had debited my account and to date I get told the same story when I follow up on my refund, that my request will be sent to the billing department and they will get back to me in 48 hours. I don't know how many 48 hours have passed. Today when I followed the consultant hung up the phone while I was talking as I was demanding to speak to her manager. I called again and a different consultant assisted me with same story of the request being escalated to the billing department. I was told that the manager/supervisor is in a meeting and he/she will call me back and this is the same story I got last week when I called. I am still waiting for the manager to call me and explain why I must wait this long for my refund and why I was charged when I requested cancellation in October already. I was looking to take a cheaper wi-fi package but never again will I use Rain.