Question about gutter support on pole barn.?

Hello I had a new pole barn built in the fall, and had continuos seamless guttering installed, with the hidden gutter supports or braces. Just been a few months and now a whold bunch of the hidden bracket or braces, not sure what they are called have popped out and some of them are bent and now can see they are not holding the gutter correctly like they were. Man that installed them says it is not his problem as ice causes this. I really need to know what is the best and long term solution to fix my gutter as this building was 4o,ooo dollars and is nice and finished but they hired this other getter person to do the gutters. He said probably needs ice shields or shelf brakcets to stop ice. I want it to look nice but also stay in place. and hold water without swaying in spots ect. If you are a professsional and have knowledge of gutters please advise me on what needs to be dont to fix them properly. The gutter man said if i replace the ones that have went straight or hook part not holding inside of getter, will do the same thing again with ice, Problem is i do not think i had tons of ice this winter, I live in Indiana. Please help us to know what to do to fix this before the gutter starts to sag. thank you. one person said to put long screws throught the fron to the facia, not sure about this. it is 6 inch seamless gutter the building is 40 x60. Never dreamed i would have a roblem with gutters already.