What to do about these coaching calls??

I was going through aakash offline test series.Wahan pe login karne ko bolte hain.I just went through it haven't bought yet.Uske baad se itne calls bhaiii... The first one I picked up they told to join offline bla bla bla u know sales pitch...but honestly i can't afford offline.Anyways din mein das bar call karte hein.Even messaging from personal unverified no.Mam r u there??..

Ek number ko block karo dusre number se Har din ka scene chal raha hai.

I AM FED UP.