Lenovo Smartphones — Problem facing in new lenovo k3 note mobile

Address:	313004
Website:	lenova.com

Sir
I purchased lenovo k3 note on 14.11.2015 from paragon mobile shop at udaipur, after using this phone one week it start network, hanging, battery backup is getting very less (Sudden battery shows low) & coverage problem. Due to this problem i getting problem because i am not getting my company call on time.
In first month 2-3 times give to service center and they did format and update my mobile and told me that problem will solved, but still problem continue. This my first mail to you.
After formatting and updating my phone still i am facing above problem. For battery problem they replaced my battery after replacing battery also problem not solved.
Due to hanging problem i am not able to send sms to my office persons, while typing sms it will take long time and while i want to edit some sms then it will take long time means 1-1 letter to be deleted then its possible so it will take long time for editing message.
Some time clock also getting hang one place top right corner clock getting hang and time shows stuck, due to this problem i am faced lot of time problem while going office or other work. Some screen shoots is attached for your kind reference.
In current months i format my mobile hand set 2-3 time due to hanging problem but still problem not resolved.
This mobile is on my company name due to buy in company policy, i request to you kindly solve this problem and make faith in lenovo brand.
Please treat this matter is serious.

Please reply me asap
[protected]@gmail.com