Dear Faizan,
Nowadays, it is a common practice for most organizations to threaten termination for non-performing sales employees. The word "termination" carries a powerful impact, often leading employees to resign under pressure and the fear of being terminated.
Performance Improvement Plan (PIP)
No organization can terminate an employee immediately due to non-performance unless they have provided enough written chances (in the form of a Performance Improvement Plan - PIP) to enhance their performance. If improvement is not shown during the PIP, the company may terminate your services on the grounds of poor performance, having given you a fair opportunity to enhance your performance.
Discussion with HR
You have the option to discuss with the HR department of your company, requesting a chance for improvement that can be monitored on a monthly basis, for at least 60 days. My advice to you is not to succumb to pressure. Trust that they will not be able to terminate your employment. If they do, it could lead to legal complications for them.
Legal Obligations Under the Shop & Establishment Act
Moreover, for additional clarity and support, if your company proceeds with termination, they are required to settle any dues within two days of your termination, in accordance with the Shop & Establishment Act of Telangana. Therefore, do not cave in to undue pressure; perform well. Our best wishes are with you.