Los enanitos verdes- lamento boliviano

Hello,
At first I was thinking ask you to translate the song, but later decided translate it by myself and now I am asking to correct the mistakes

Los Enanitos Verdes- lamento boliviano

Me quieren agitar - (Somebody) want to agitate me
Me incitan a gritar. - Incite me to shout
Soy como una roca, - I am like a rock
Palabras no me tocan - the words don't touch(?) me
Adentro hay un volcán - Inside me is a volcano
Que pronto va a estallar. - which will explore soon
Yo quiero estar tranquilo. - I want to be calm

Es mi situación - This is my situation
Una desolación, - Desolation
Soy como un lamento, - I am lamentable
Lamento boliviano. - Lamentable Bolivian

Que un día empezó - (I wish) that a day starts
Y no va a terminar - And don't finish(terminate?)
Y a nadie hace daño. - And don't give a pain to nobody

Y yo estoy aquí - And I am here
Borracho y loco - Drunk and crazy
Y mi corazón idiota - And my stupid heart
Siempre brillará - Will always shine(?)
Y yo te amaré, - And I will love you
Te amaré por siempre. - Will love you for ever
Nena no te peines en la cama - Baby don't comb(?) in the bed
Que los viajantes se van a atrasar. - Because the salesmen(?) will go slow(?)


I dont really understand these two last lines. Is it that man suffers because his girlfriend(or not?) goes with others?
Correct me if I am wrong, please.

This was a hit song in my country, and maybe I can clarify some of your doubts.
Palabras no me tocan - Words don´t get to me (meaning that you don´t care what other people say)
Que pronto va a estallar - Which is about to explode/ Which will explode soon
Soy como un lamento - I´m like a lament (it´s a noun, not an adjective, that´s why you couldn´t understand the following lines)
Lamento boliviano - A bolivian lament
Que un día empezó - Which started some day
Y no va a terminar - And it´s not going to end
Y a nadie hace daño - And it doesn´t hurt anybody (the "it" always referring to "lament")
Porque los viajantes se van a atrasar - Because the travellers will get late

I don´t understand the last two lines either, they don´t make much sense with the rest of the lyrics, but I guess they are open for interpretation.
Hope you find these comments useful!

Thank you Pau_GyG for your comments, they was really useful!

Maybe others know how to undestand the last two lines? What is the meaning??