IRREGULAR MONEY DEMAND

I had a month to month subscription with RAIN for WIFI. I was paying for more than six months but I was not getting proper connection to my property. They came few times to check what was the problem but they could not help. Eventually i cancelled/terminated in writing with them because of NON CONNECTION TO MY PROPERTY. I paid each and every cent that was outstanding and Rain arranged to come and collect the unit from my house. Last night I received a message from NuDebt to say that I owe them. I need to contact them. Why must I get this message after ONE YEAR of cancellation?? According to my records I don't owe anything to Rain including their unit which was returned. RAIN MUST check your records and update them accordingly. I don't RAIN ANY MONIES TO THEM.