Do not use this company.

Do not use this company.
I am a building contractor trying to complete a modest size extension on a private house
I ordered some dual coloured windows and bi-folds on 2nd October 2015. The bi-folds came 1 week before xmas but we are still waiting for the windows, some 15 weeks after ordering ( original estimate of 6-8wks ).
Duration are still unable to confirm a delivery date for me, which continues to be quite unacceptable.
One is the minimum star rating available otherwise it would be zero..
Sort it out Duration for any future customers, for that won't include me...