I tried calling you

Dear,

please clarify this for me.



I affirm that these are grametically corrct.

I have been trying to call you

I have been calling you



please confime the below sentece is correct or not

I tried calling you.

is this grametically correct?

how could we use two verbs in this sentece?



please clarify this and it could be better if you give some examples on this regard.



Please make me understand.

Regards

Madhu