Musesonic wireless ear phones

Hello guys,
i am new to this group.
i have a musesonic wirelessearphones. From 2 days i am facing an issue.that is, the mike works perfectly without any problem like while playing pubg,using google assistant etc. But when it comes to making a phone call it doesnt working... I tried resetting my earphones,and tried connecting to other deviced also...
plz tell me is there any solution for this.
you can see my earphones model from the following link:
 
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