Apple India — apple iphone 7 audio stopped working after latest update

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Prestige trade towers 45/1, Palace Rd, High Grounds, Sampangi Rama Nagar,, Bangalore, Karnataka, 560001

Iphone 7 audio is not working after the latest software update.
. We contacted apple support, still, we haven't received any solution.
. They suggested all the possible solution but nothing worked.
. Support guys suggested it should be a software problem and some engineer is working on the solution.
. Now they stopped following it up and we don't know what to do.
. Apple should be held responsible for this.
. Give me the fix for this issue or replacement.
. Its out of warranty. But software glitch is not my problem.