Highly dissappointing service

My car keys was ****** and Rola Toyota Somerset west had to change all the locks on the car, this was an instruction given by my insurance. I delivered the car to them last week Thursday and I was told that the parts needed was there and I will get my car the Friday. However the next day I was told that the parts was not there and I will have to wait till 2 January 2018. Today I'm told that the parts still HAS NOT arrived and they don't know when my car will be ready. I then explained to them that I have booked a holiday way in advance and I need my car today. I was then told I could have a courtesy car, and later when I contacted to find out the details about the courtesy car I was told that I cannot get a courtesy car. The manager then said "he does not know when my car will be ready" and was insensitive to the fact that I have to cancel a fully paid holiday. The one hand does not know what the other hand does, phones do not get answered and I had to phone back numerous times to find out what was going on. I was promised one thing and only contacted later to cancel what has been promised. Honesty and integrity in business should be key but this seems not to be the case at Rola Toyota Somerset West.