We will call the girl tomorrow!!!

There is a girl who always calls and text my husband and he too and i confronted him today and he says that he dont know her at all and maybe she texted wrong guy but i saw everything and he swears that he didnt do anything so i said well give me your phone i will call her ... but she didnt respond but i said send an audio voice mail on whatsapp and i did and he was a little bit shaky ... tomorrow we will call that "girl " he dont know. I dont know if its a good idea and how he will react.... what do you think?