Hathway — Hathway Broadband cheating and getting calls multiple calls daily

I have availed broadband connection with Hathway with A/C : [protected]
Connection start from Date : 30-NOV-2019 to Date : 29-FEB-2020
Closed connection Date : 28-FEB-2020

I requested Hatway to close the account on 27th February 2020, and return the device in April 2020, and I updated the Google page with all of the requested information.
After a year, I began receiving calls from Hathway Broadband to activate the connection, which stated that the account had not been closed and that no device had been handover.
I disconnected connection in 2020 and have been receiving calls from Hashway since 2021, with various numbers. It's torture from the Hathway Broadband.

I received a call from [protected] and agreed to close the connection after being asked to pay 425 rupees to the UPI "hathway.[protected]@indus, " which is refunded when the account is closed, but instead of closing the account, they activated it.
I received an invoice from Mobile Number [protected] via whatsapp and an email from "[protected]@hathway.com, " and I received a call for activation. When I try to contact the above-mentioned numbers, they are unavailable. I also attempted to contact Hathway, but had no lick.

I've included the Whatsapp chat, call records, and invoice mail data for your convenience.

Company Address:
HATHWAY CABLE AND DATACOM LIMITED
Registration Office : 4th Floor, Rahejas, Corner Of VP Road, Main Avenue, Santacruz West, Mumbai 400 054
Billing Address : 3rd Floor, 303/304, Mahaveer Chambers, Liberty X Road, Himayat Nagar, Hyderabad, Telangana 500029

Note:
1. When I tried to contact customer service at [protected] / [protected] - It seems that there are many accounts registered with my name, which baffled me because I had never opened any account with Hathway.
2. Requested a refund of 425 rupees from Hathway due to their negligence in allowing me to pay them. The return procedure is stressful here, and I don't want to get any calls from Hatway from now onwards.
3. Please take stern action against such firms.