Parts fail after 3 months

A gate repair was carried out by Gido in Mid May this year. 3 months after this my gate has the same fault as before. After calling Gido I was told that I would once again have to pay a call out fee regardless of whether or not the fault is a a result of the faulty component/s installed by Gido. Basically they think they can install poor quality/faulty components and expect their clients continue to call them out and pay for them to fix the same thing.