Multiple issues with brand new Gionee S5.5 – 7 Days old

Hi
I bought gionee S5.5 on 6 July 2014 and within these last 7 days only I am constantly getting several problems in this brand new phone. Few problems are:
1. Phone Hang
2. Touch stops working sometimes.
3. Camera images are very poor and blurred. Marks inside lens.
4. Applications start opening and closing by self and nothing could be done at that time of abrupt flickering.
5. SMS unread notification does not go even on opening and reading all SMS. Or even deleting them. Its permanent.
6. Phone heats up very quickly.

I am highly unsatisfied with the quality of the handset and feel trapped after making this worthless and hefty spend of Rs. 23000 [21000 + 2000 on insurance of phone from gionee]

I want to return this phone and want my money back hence seeking your help for the same. Kindly help me out in getting it resolved. Kindly do the needful ASAP.
Do let me know if any other info is required.

Regards
Prafful Dixit
+91-9650818885
[email protected]