We ordered stacking doors and windows from Gustav to close our patio. I only read all the complaints on Hello Peter after we paid him 50% deposit. I was very worried but Gustav promised that they will deliver and install the doors. The factory was a few days late with the order ( I talked to them myself) but the work Gustav and his people did was very very good and very neat. The doors and windows are good quality and it was perfectly installed.
I would definitely use his services again.