Manas Hosting — Not giving my domain to transfer to another hosting company

I registered my domain and hosting with this worst company . Hosting for 15year and every year domain. Service of this company is very worst so I requested them to transfer my domain. At that time they forcing me to pay 2400 rs and then they will give me transfer information. and they harresed me for that . And now My domain expired then they didnt even informed me that my domain is going to be expired. and now its expired then i contected with them to renew my account now they gain asking me to pay 2000 rs for the renewal but the standard changes are only 700 rs but they are forcing me to pay 2000 otherwise they will not renew. So i just want to know legal process so that i can take action on such worst hosting provider company and they are missusing innocent persons and harresing us.