Sony — xperia xa1. didn't make phone calls and network issue with speaker problems

Address:

Bhopal, Madhya Pradesh, 462010

I recently bought a new phone sony xperia xa 1 so the problem is now that when i tried to call someone sometime its goes to the black screen and sometimes the call icon didn't work and i am unable to call and the next problem is that my music system voice fluctuate on going on going on the music whenever i tried calling there's also network problem the product is very unsatisfactory and i am very disgrace with the product and the services you provided i need urgent attention towards my problem.