Just buy a local sim
Edit: ETravelSim called me for the issue and instantly refunded me. Coverage issues can happen but customer service was really helpful. Thank you! Bought a card from and for India but it doesn’t work. Contacted the customer care by email, got told that in Kolkata doesn’t have coverage, but I’ve been in Varanasi and Delhi and doesn’t work even there. Ps Bought one local sim with 1.5 gb a day plus 100 gb for 8 euros