Resolve or I’m cancelling the service in the next 24hrs

I signed up for Rain in February, i get paid on the 20th of every month, so i pay for the service on the 20th in the early hours of the morning, but even thou I have paid the monthly fees, the service stops on the 20th and takes two to three days to restart, which is a waste of time and money for me, i have tried to call and explain this issue but no one can seem to give me the answer or a resolve for this, this msg is my last attempt to solve this as I have paid this Friday 19th of July and today is Sunday the 21st and I haven’t had internet since yesterday morning, I will cancel this service and send back the router and sims if Its not fixed for good in the next 24hrs.The quality of the Lte is flactuating between 5mbps to 45mbps but it is not stable and never been stable since February and the upload fluctuates between 1mbps and 10mbps constantly, which makes work-from-home impossible, half the time I have to buy MTN data to continue work specially with teams call/video calls