While agree with Adv V R Shroff, I would like to add ;
In the Leave and License Agreement if the usage of shop is clearly indicated and if the Leave and License Agreement drafted properly on an adequate amount of stamp paper (purchased by either of the parties) and if the same is registered with the Sub-Registrar Under Section 55 (1) of the Maharashtra Rent Control Act, 1999, your advocate should proceed issuing Notice of Revocation of Leave and License agreement due to usage of premises for the purpose, other than permitted one under the said Agreement and for further course of action you will need to refer the matter to the concerned competent authority in your area.
Furthermore, even if your Leave and License Agreement is not registered, but if it is well drafted clearly specifying the relationship of Licensor and Licensee, then the Bombay High Court judgment in case of Amit B. Dalal V/s Rajesh K. Doctor, in which the Writ Petition was filed by Petitioner under Sec. 24 of Maharashtra Rent Control Act 1999, will also be a good defense, since in the said case a non-registered L&L Agreements, also got the admissibility in the court of law.
Please take help of a reputed lawyer in your area.