I NEED MY MONEY BACK RAIN!

I cancelled my 5G Rain service in beginning September, got a sms from them saying the cancellation was SUCCESSFUL and returned the router .

I had already paid for October, even though I did not use the service after cancellation. However, at the end of October, Rain still deducted money for November, which should not have happened since the service was cancelled.

Please explain how deductions are still being made for a cancelled service. I cant get ahold of RAIN, phone numbers dont work and no agents call back when requested.