Motorola Solutions — while talking with, someone next person can't get my voice until i turn on loudspeaker mode.

I purchase moto e3 power mobile in 15 may 2017. Within one month the voice problem issue comes. I submit the mobile in motorola care center which is placed at nal stop, kothrud, pune. The care center take a 13 days for such a small issue. The above mentioned problem is repeated within 2 week. Now what is the use of such mobile which have problem in every 2 weeks & take a long time for repair for such minor issues. It is very easy to repair in private center but what is the use of mobile warranty given by you.