Amcor Roofing

Had my roof redone do to leaking got rep in said they would fix this problem and insall vents roof was finished and still have one vent not two roof got icedams and leaks we contacted them about this and were told someone would check this out 3 days later roof leaks more why do company like this think there not responsable to the consumer just cause thy got paid (Consumers beware!!!!!)