"I call her."
There are several tenses for verbs in japanese.
呼ぶ (yobu) is the dictionary form of this particular word.
呼んで is yobu conjugated into て form (which is a form typically used when issuing directions or asking someone to do something).
呼んだ is the past tense of yobu. This form is also referred to as た form because all past tense conjugations end in た or だ.
呼びます is yobu in it's masu form, also known as the polite form. Godan verbs such as yobu have their u-endings become i sounds in this form such as [kaku 〉kakimasu].
For a better grasp of this concept, I recommend the mobile application "Conjugation Japanese" to aid you in your studies. It's free and easy to use.
I have also tried this translation. Unfortunately, it's still not included as a correct translation.