First name basis

The Filipino way, most people’s first name is Maria.  There are so many Maria’s in our family, me included.  However, we don’t use our first name.  I use my second name.  My only wish is I wish I wasn’t named Maria. 
The trouble started not in my childhood.  It started when I came to Canada.  
The officers saw how long my name is, they started using Maria.  Employers did the same thing, Maria.  Well, I felt there is no use in contradicting them since they are having a hard time pronouncing the name.  
When I say my second name, the common response is, Huh?  How do you spell that?  P as in Peter, E as in Eve, R as in Richard, P as in Peter (again), E as in Eve (again), T as in Tom, U as in Uranus, A as in Apple.  Perpetua.  What? Petula?  Never mind, call me Maria.  The names that I just called out, they understand, but not my name. 
As for being Maria, oh the trouble I go.  Maria seems to be a troubled name.  People started singing “How do you solve a problem like Maria”.  Sound’s familiar? 
It was only in 2010 that I decided once and for all, I will use my name that I am accustomed to hearing.  Perpetua it is.  Again, my colleagues of 13 years, they kept on calling me Maria.  Sorry, folks, I am not responding to that! 
So here I am, as a Canadian Maria, signing and dancing to the Sound of Music. 
 This is in response to Daily Prompt: Childhood.  Come and join us, it will make you sing.