Gazon Communications — no response from company

Address:

411027

Internet at home is not working since last 6 days. I raised ticket but no one is addressing the issue. Worst part is that they are neither picking the phone nor replying to mails.
Their sales office says that they can't help as this is not their department.
They have not mentioned their escalation metrix in the website.
If any one knows how to escalate, please let me know