Spice Mobiles — Spice mobile battery

I have purchesed two spice mobile Mi 401 white n golden from you on dated 28/6/2015 .Invoice no is Tara /15-16/173519 and Tara/15-16/172029 on invoice date is 29/6/2015.But when i recived those mobile battery is very weak or not working, I complaint regarding this to service center they told me it will be replced with in a week But still no result .my complaint no is 13101686F70051 /13101686F70052 .my QUESTION is you will replaced t6hose battery OR this is my last shopping with home shopping 18.Keep in your mind that my contract no is [protected].If i do not recive any responce from u with in 24 hrs this will be last visit with home shopping 18.