That's why humming sound come due air in system. Remove the petrol cap for sometime and put back to fuel lid and tightly close it and check the voice.
BTW Honda Center doesn't have parts for pk6 model. How they arranged fuel filter and pump? Have you bought these item from 3s or from local market?
What I think now they source the parts from local market for pk6 model, marked as genuine part and ripping the innocent customers by saying this is genuine one. What do you think?