Bharat Sanchar Nigam [BSNL] — Unethical behaviour, Bad customer service

Address:

BSNL Office, Kodaikanal, Dindigul, Tamil Nadu. 624101

I have been facing internet issues for nearly 3 weeks till now (15/05/2021). I made several complaints to the BSNL office near me and all they do is give excuses and did the same for 2 weeks straight.
I still haven't got my problem solved. My internet service could be considered the worst of all. I get 100% packet loss and on top of that, internet is totally unstable, I tried asking them so "patiently" many times, even calling them daily if they would fix it, but nope, all they do is give excuses that they cant come and fix it and say they would come the next day. I have educational issued because of this, I lost my attendance, couldn't attend my semester exams, and can't attend online classes. This has been such a hassle and I mean it. I hope someone reads this and helps me out. A person can only be patient for so long. I hope someone in the higher authorities see's this and solves my issue. Thank you.