Whether your cousins or a third person, the law is common to all.

you issue a legal notice stating that they violated the rental agreement conditions by defaulting the rental payment for so many months.

hence as per the conditions of the rental agreement, they are liable to be evicted from the premises due to the breach of this agreement condition, hence you may instruct them to vacate and deliver vacant possession within 15 days from the date of notice failing which you may file an eviction suit before the appropriate rent controller court.  

Send a legal notice for eviction.

Issue legal notice to incense to pay arrears of rent 

2) file eviction suit 

Dear Client,

In your case, since the tenant stopped paying rent and refuses to vacate the property, you are eligible to proceed in the following manner in Indian law:

1. Legal Notice: Send a legal notice to your cousin demanding rent arrears and stating him to vacate the property as per the terms of Leave and License Agreement.

2. File an Eviction Suit: In case they fail to respond to the notice, you can file an eviction suit either under the *Maharashtra Rent Control Act* or under the law of the State. Non-payment of rent is a just and sufficient cause for eviction.

3. Recovery of Arrears: As to the eviction suit, you can also file recovery of your unpaid rents along with it in the court.

They are your cousins, so some amicable negotiations before reaching to the courts may work.

Thank you.Hope this answers your query.

- As per law, the said tenant is under obligation to pay the rent regularly , and if not paid then the landlord having his right to evict him.

- You can send a legal notice for the termination of the tenancy agreement. 

- If not vacated after receiving the legal notice , then file a suit for eviction before the Court. 

Kindly give them notice if you had made the Leave and license agreement according to Maharashtra Rent Control Act, 1999. and remove/vacate  the shop forcefully.