Airtel — not providing higher speed plan

Address:

Gwalior, Madhya Pradesh, 474020

I am a airtel broadband customer for 6-7 years and currently using 2 mbps plan. I recently came to know that in my area higher speed plans are available and also airtel is providing v-fiber technology in my area. I requested the airtel representative that i want to upgrade to a higher speed plan but they cant provide speed upgrade due to feasibility issues. But they are ready to provide new connections in my area with higher speed i myself checked it a cyber cafe more distant from my location and their local exchange (*dslam) is getting 8 mbps plan

While in my router the attainable rates are more than 18 mbps (Fluctuate but never goes down to 16mbps) also snr and attenuation are acceptable

Downstream upstream
Snr margin (Db): 31.9 29.3
Attenuation (Db): 25.5 14.2
Output power (Dbm): 12.3 13.6
Attainable rate (Kbps): 21824 978
Rate (Kbps): 2559 511

Also i somehow got to know that it is due to airtel not giving a high speed slot (Port) to me but is willing to do for new customers

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