It's very distracting.

I told you not to call me while I'm working. It's very distracting. / Я говорил тебе не звонить мне, когда я работаю. Это очень отвлекает.

Excuse me. Can I talk to you for a second? 

- Excuse me. Can I talk to you for a second? / Простите, можно вас отвлечь?

- Sure. What is it? / Да. В чем дело?

It is distracting for my work.

простите что отвлекаю перевод на английский

I'm so sorry to bother you.