Solution for all**
I have been searching, trying, restarting
, and finally have found out a solution.
This solution requires a secondary device with internet access. I admit that, this may be a blunder in store or it's problem but there is solution.
No rocket science needed.
1)Cancel the update/download/install in store.
2)switch off auto update.
3)Download the installation file from windowsphone.com site, by clicking download and install manually. REMEMBER to access the particular country site, which should be same as the country selected in your phone.
4)Now transfer this app installation file to your phone using a cable, as the bluetooth transfer doesn't work :/ .
5) Go to store, from option, select "install local apps", store will search and you'll see the respective app listed. select it and click install. The process will jump to installing as the file is already downloaded, and within seconds to mintues(depending upon file size and app requirements), the app will get installed.
Hit like if worked or helped