Hathway Cable & Datacom — hathway router and modem

Hi,

I used hathway broadband services from[protected]. I stopped using their services after may 2017. I called up hathway and asked them to end my connection and to collect their router and modem. Nobody showed up. I kept the router and modem with me for a year after which i got threw them away. However, after almost 1 year later they are texting me asking me to submit the router and modem failing which they will initiate legal proceedings against me. I had already asked them to collect their stuff on phone to the customer care executive a year ago. How is it that i'm being threatened with legal proceedings now? It is their responsibilty to ensure that as soon as a request is raised to terminate connection it is acted upon. Whether it is over email or phone is irrelevant. I also checked against my account and there is bill due. I'm all paid up. Also, i was using a prepaid connection