Lava Mobiles — mobile problem

Address:

Gautam Buddh Nagar, Uttar Pradesh

SIR,
i had purchased a lava mobile phone z70 and creating problems like hang, sysytem URI not responding, aries not responding and many other functions like close app or wait dnt know what what, finger sensor started working very slowly no more apps are installed 7.17 gb still available then why this problem is arising after seeing this i had reset my phone after resetting the phone it start working in good condition and then after three to four days, the same problem start again ...and even if we are not using and not working and hand set is heating, my mobile no.[protected]