Landlord locked my rented house without formal notice

I returned to my rented house after a period of 2 days. Meanwhile dude to outstanding Electricity dues the Company disconnected the Connection.IThough my landlord had informed I didn't have money then to pay.I have had defaulted my rent also on few occasions owing to some financial hardship I was going through.But I came good in the last few months and made some chunk payment of around 55k in 2 months.But, isn't locking me out without notice, without communication with all my valuables , essential documents and prescribed medicines illegal and unethical ? Can I take legal steps against my landlord .Can I cut through the outer lock to get my entry to the flat to which I have keys? What legal actions can be taken , how to go about it and can I ask for compensation?I missed two business opportunities since I didn't have my credentials with me.Although I pleaded and sighted me coming good on payments in the recent months this ordeal went on for a week.I paid of electricity dues,btw! Thanks