Rain double billing

Rain is making life difficult for one this is just headache and pain doesn't only drain one financially but emotionally as well. I was called by rain first week December 2025 regarding my account if which I explained to her that I didn't have the funds to pay and I would pay end of December and they would connect me till Jan. I paid rain on the 28th of December 2025 thinking my next payment would be due on 28th Jan 2026, today I realised that they have disconnect the router and when I called the call centre a lady consultant advised that rain would call me back ,I waited 4 hours and no one called me back ,I then decided to call them the consultant I spoke to was very arrogant and he told me that he would not reconnect me I need to make another payment it doesn't make sense to me because the whole of December I did not use their services ,why am I being double billed? Rain please kindly reconnect me I recently lost my job and i use the internet to apply for job's,and now that you disconnected me where do you expect me to get funds to double pay for the internet? I feel like this is daylight *******.