Amul / Gcmmf — Kesar pista ice cream

We bought Amul kesar pista family pack ice cream one day ago and today at 11 pm when I was eating ice cream, there was a small stone that came in my mouth, it totally looked like some dry fruits but it was hard so removed it from my mouth and found that it’s a small piece of stone .
This is not acceptable, I might have ate it and anything could have happen to me.