zepto being creepy

at 7:00 a.m in the morning while i’m fast asleep i get a call from a random number and when i answer it the guy says he’s from zepto and i say to him i didn’t order anything( i didn’t even open the app in ages)but he says my name and asks aap hi ho na, i got so scared and creeped out and hung up the call and blocked him. what can i do about this? i can’t find any reliable way to contact zepto customer care service!!