Tata Sky — not providing static ip

Address:

Gautam Buddh Nagar, Uttar Pradesh, 201301

I live at hyde park, sector 78, noida. On 1st july 2019, i purchased 7 month broadband plan from tata sky broadband. As an offer, they had promised static ip. For that i called to the customer care. They informed that they will provide ip v6. But even after more than 3 months they have not given me the static ip. I have made several followup via call to customer care, email to customer care but in vain.

Please help me.