Centra Locking Defects

I wouldn't recommend anyone getting their central locking installed at this entity. My passenger door stopped working (slave motor stopped working) in a space of a year. I went back and was advised i would have to take the cost on - R450 later, which i did. 9 months later same ISSUE. I called in and was advised they only offer 6months guarantee on the central locking and i would have to take the cost on AGAIN? Clearly there must be issues with the parts. I definitely will no longer be recommending this entity.