The Glass Shop

I got this company to come out and do a repair, they were meant to do a double glazing job on the glass sliding doors leading towards the garden from the living room. They did not provide a double glaze glass door, rather a single glass door without a lock. Upon numerous calls and emails and promises to contact me back they have yet to do so and it as now been over three months since they completed this cowboy job. Bearing in mind i made a full payment of £600 prior to them even starting!