When I called you, you

Here the word "you" is plural and refers to the people of Ephraim. (See: rc://en/ta/man/translate/figs-you)

did not rescue me

Jephthah uses the word "me" to refer to himself and all the people of Gilead. AT: "do not rescue us" (See: rc://en/ta/man/translate/figs-synecdoche)