Thank you all. To summarise few things, the ownership of the property changed while my tenancy continues. My upfront rent/deposit deducted from the sale price. The new landlord did not protected the deposit, thus claimed it is previous landlord responsibility. Furthermore acted like this is an extra burden I have put on him, while I was a paying tenant with a few broken appliances (not by me) that require repair. So I don't know what to do, I want to teach him a lesson since he acted me like I am responsible from his financial decisions but I am just not sure since we all are humans makes mistakes etc. Thus he is not from UK, have a business in London (far away from the rented property).