We are 27 year old tenant landlord is increasing rent every year

We are living in the place for more than 27 years and suddenly now the landlord has started increasing the rent in 2 years time despite the promised (verbal) 5 years. How can we pay the rent through court and what are the laws pertaining to the problem. The only bill we have in our name is a 14 years old landline bill. We don't have electricity or water bill too our name.