Call Me-Aretha..Nine Times-The Moments..634-5789-Wilson Pickett..Beechwood-4-5789-The Marvelettes..Mr.Telephone Man-New Edition...what cha got?
Beach Boys - Had To Phone Ya Four Tops - Just Seven Numbers (Can Straighten Out My Life) Jim Croce - Operator (That's Not The Way It Feels)
Brenda Holloway, Operator. It got tons of airplay in the summer of '65, to the point that my recollection was that it was huge.