Received offer letter without discussion
Today I received my offer letter, but there was no salary discussion with HR before the offer was released. Last week, HR called me and asked me to share the offer I currently hold. My current offer is ₹14.5 LPA, which I shared with them as requested. Today, I received the offer, and the compensation mentioned is ₹13.5 LPA. I'm not sure if they missed checking my counter offer. I've also tried calling the HR, but they're not picking up. To be honest, they haven't picked up my calls earlier either.
The offer letter says I need to accept it within 3 days, otherwise the offer may be withdrawn. What should I do in this situation?
Update: There are a few corrections regarding the offer that I forgot to mention earlier. I was a bit confused and didn’t read the details properly. The offer is 13.5 LPA fixed + 0–10% variable (depending on performance and market conditions) + ₹2 lakh joining bonus + ₹2 lakh retention bonus, which will be paid after completing 1 year. Also, the offer I currently hold, fixed component is ₹13.6 LPA.