Don't waist your money or time !!!

I've been with rain since 2021, I've paid my account upfront so I've cancelled my contract with them and they were very quick to stop my internet but they want to bill me for a month that I didn't even had internet connection. I phoned them numerous times but obviously no success. I refuse to pay the outstanding amount. I still have all the mail's and invoices to proof that I've paid my account upfront every month. The best way forward with Rain is to take them to the ombudsman. I will not recommend rain at all.