Makro - Poor service

Purchased a washing machine at Makro Woodmead this morning( In Store).Delivery promised today after purchase and confirmation of delivery I get a call saying no stock . Tried to log a complaint on Makro website but system wont allow me to submit same.Called contact center , informed systems down so I cannot log complaint via telephone . All very convenient for them .. I cannot voice my unhappiness and they can then claim I never gave them a chance to rectify the problem .I can understand the stock issue but then dont tell that you have stock and will deliver today . Also - make sure your systems enable effective communication with the public .Normally I would only go to Hello Peter if I had followed other options first but in this case the vendor conveniently has not got any options for me