shockingly long online delivery period - 17 days!

DO NOT RELY ON THE 4 - 7 DAY DELIVERY PERIOD. I placed an order on line at Zara, as the store I visited didnt have my size. The website states 4 - 7 delivery which is already excessively long. Only once the order is confirmed do they indicate delivery which in my case was 12 days! Shocking for this day and age and even worse then their poor indication. Today I get an email to say my delivery is extended by a further 48hours. Tried speaking to a Aditya on their chat line who took ages to respond to every question to be told sorry but they dont offer an express delivery service!!!!!