It then had an second hand, Engine Change 17/11/2012
What do you mean "Secondhand engine?" Bought at the nearest Pawnshop? Fell off the back of a lorry? How do you know it wasn't a brand new spare? As for the length of time taken to fit it - how long is a piece of string?
ALL THIS IS TAKING TIME.
You need to get your priorities right. Life is the most important thing, far, far more important than money or anything else. There are times when delays can be inconvenient but I and I'm sure the majority of travellers, prefer to know that any aircraft I may fly in is safe and I am likely to still be alive at the end of my flight. If this means a delay then so be it. In the past I have been delayed for technical reasons but I am still here because the engineers took the time to ensure everything was fitted and working correctly - in my book compensation enough for the delay. Long may engineers continue to be meticulous.