Problems with my iPhone 7

The microphone doesn’t work can’t put the phone on speaker record sound or send a voice note headset not even connecting. how can I fix this problem

Start here -->If the microphones on your iPhone, iPad, and iPod touch aren't working - Apple Support

Contact Apple support at 1 (800) 692-7***3

[Personal Information Edited by Host]

I may have been wrong. Saw it on a blacklist.

Anyway, to find an Apple number anywhere in the world-->Contact Apple for support and service - Apple Support