Micromax Informatics — improper working of my handset e453 model, eim no. [protected], [protected]

Address:

Hyderabad, Telangana, 500034

I purchased your handset during june 2017 through on line at kolkata. Subsequently i am transferred to hyderabad and during october my handset started problems of screen getting black, hanging during calls etc., i searched for your service center and got it done, they said the problem was with software and they reloaded it.
Again after a few months got the same type of problems. Since i was staying far away from your said service center i could not approach immediately, but on 28/07/2018 i approached the same service centre at secunderabad near manju theatre. They said there is a problem with software and asked me to pay rs.550/- and reloaded and gave it to me.
I do not know whether the problem is with micromax handset or service center,
Am very much unhappy... B v jagadeeswer rao ([protected]), [protected]@hotmail.com