Jio — Poor network in my area

Address:

GAURAVA NAGAR, JP NAGAR 7TH PHASE BANGALORE

Sir,
I am a customer of jio. I had a bought a new sim a day back in the sense that jio has a good network. but now I am thinking of buying an other sim due to the poor network. I am not able to even call the customer care. I was not able to attend my online classes due to this severe problem.so I would request you to please take action on this before tomorrow.