Parashat Zachor with Different Pronunciations

My shul has always read Parashat Zachor once, with our regular havara (pronunciation). Some people now complain that we do not follow other shuls and read multiple times with different havarot to fulfill the mitzva according to more opinions and to do the mitzva properly for Sephardim. Should we change our minhag?

Women Hearing Parashat Zachor