Airtel — zero upload speed

Address:

Paschim Medinipur, West Bengal, 721302

Its been a week, upload speed of airtel 4g has gone down to almost 0 mbps (0.3 mbps max). Even though download speed is fine, its painful to upload photos, videos and important files. I've tried changing my devices (Smartphone, dongle, hotspot) and have tweaked some settings, but it comes out to be a problem on the network side. Also support had advised me to get a new sim, but since it is happening to many of my friends, its not gonna resolve any way.