A landlord in Ahmedabad is seeking advice after receiving a legal notice from a long-term tenant making inflated and baseless claims, including a demand for 150 years' rent based on an alleged 24-year-old oral agreement. The tenant has also threatened liability for accidents due to alleged disrepair, despite not raising these issues for decades. The landlord plans to terminate the tenancy and is looking for guidance on handling the harassment and pursuing legal remedies.