Hathway — Harassment in phone calls

Use hathway internet connection in Chennai. Due to covid-19, i stuck in my hometown and waiting for situation to be normal and restrictions lifted to travel, till then i dont see any reason to recharge my internet connection as there is none to use it.
I explained the same to hathway and they acknowledged, still i get multiple calls daily from hathway customer care to recharge my account. I even asked them to deactivate/surrender my connection, and will activate once i am back still they dont stop. I am going through lot of things here, and these calls just irritating more leading to a mental stress.