Alliance — Very poor service please help me

Address:

Arghya konar Barun chandra konar's new house Sarada pally ,railpar panagarh bazar Panagarh, WEST BENGAL 713148 India Phone number: ‪7001054938‬

I recently shifted to panagarh (Burdwan) and i am using alliance broadband, i recharge for 800 which is 70mbps plan, but i get 4-5mbps in speed test and in real when i download something i get 1-2mbps speed. I complained many times (10+) but no action is taken from the company and my local internet provider also ignores my calls everytime i call him. When i was in asansol there was a good service by alliance so i trusted and took alliance here also but its seems its the worse service here. *800rs per month is a lot for me so, please someone help me to fix this.*
Client id: [protected]

P. S :- i dont know why but my internet works normally/good (4ms/66mbps /33mbps upload) after 12am to 8am and again after 8am to 11pm its the worse service i get. And yes i checked and changed my router also buts its same.