See who's calling

Some person just told me her name was XXXXX and asked me to verify my name and birth year and I asked who was calling and her response was "I told you my name, I am calling for a confidential matter for (she stated my name) and you need to verify if this is your birthday. " I repeated that I was not comfortable verifying personal info over the phone unless I knew who I was speaking to and again she just said "I already told you my name" and I told her that was not enough and she said "ok, I wi