Is there a way to turn off the voice for incoming calls......

Only had the phone a few days and havent gotten many phone calls. Got a call just a little while ago and realized that the phone, even with a custom ringtone, says "Incoming call from _______________". How do I turn this off? I cannot find the setting and I do NOT want it to alert everyone around me who is calling me, there has to be a setting somewhere that I haven't found yet... anyone know? Thanks in advance!
 
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