Owner is pressurizing me to vacate flat before the agreement period

Hello Sir, I've been staying at the Owner's property for last 17 months. I am paying a rent of 20K per month. I have asked the owner several times to for the lease/rental agreement which he has shown no interest and has not signed till date. I am paying rent and maintenance in time every months for the past 17 months, I have increased rent 6 months back @5%. Orally we have agreed the following terms at the time of check-in and I have asked him to input the same and send me agreement, for which he mentioned that his CA has asked him not to sign the agreement. 1. Agreement for a period of 24 months, which can be extended for another 24months. 2. Rent increase of 5% annually. The rent in my area has risen due to demand for rented property, and the owner wants me to vacate the flat as she is looking for a tenant who can give her 25,000 a month as rent. She gave me a reason that she wants to occupy the house for their personal use. The owner has now asked me to vacate the flat in next 2 months and consider this as notice which he has sent by whatsapp. She also informed me that if I am willing to pay 25000 as rent then I can continue. Please advise on what I should do in this situation. Thanks & Regards