If im calling for someone and they say like "iyor" what does that mean?

Like Denise iyour ...

Could be "i´m yours" ?

Maybe s/he mistyped.

maybe

Denise diyor = Denise is saying, Denise says

demek = to say, diyor = he/she is saying, he/she says

Denise, we can guess many things, but it doesnt work. Maybe you should send all sentence, after that we can help. 

they are saying to you or you call and they say it aloud to another person? do they use your name like "denis arıyor"? meaning denis is calling.

There was no more, i was asking for "Denise" and the person in the phone(i dont know him) said "denise" iyour.. and i dont know turkish s i just say okey bye..

Denise, iyor is continous tense and it always comes after a verb. So only possible option is you couldn´t hear the verb.

maybe he said "denis uyuyor" meaning he is sleeping.

My guess; probably he tried to left a message and meant in there;

I´m your uncle / relative / neighbour / friend and i dont know Turkish.

Hah the man was eating!

Thank you so much all of you for your hep! it must be that uyour that he is sleeping, thank so much again

Could be

Denise yiyor 

how could it be eating?

yemek = to eat

yiyor = eating (ye + iyor = yiyor) present continuous tense for 3rd person singular (he/she/it/Denise)

Denise yemek yiyor Denise is eating (food).

but then the person on the phone would say "denis yemek yiyor" because you cannot say "to eat" without any object.