We commissioned Alpine to provide us with triple panel sliding doors and two new windows. We have paid them in full in line with there payment requirements. They have fitted incorrect colour handles to the windows, the handle to the main door is scratched and is loose/flexes when the door is opened. The frames also appear to bow over their height seeming unsuitable. I have reported this to Rebecca Robinson (Office Manager) and they have not returned to rectify or even responded to state why they wont return. We have also written to then try and claim under the guarantee with again no response. Absolutely useless