In call volume issue in Note 8

[Sleepywolf]

I'm facing low in call volume issue for last month(After April 2019 security update) and have done all troubleshooting including factory reset but nothing happened, I'm posting this issue third time, no one from Samsung team give me any solution.
Samsung

[Juñńu]

my handset also having same issue but not from April update...I'm having this issue from September update