Wasting my time due to bad process ordering part

On 21 July, I emailed [Email Removed] asking if my side mirror could be replaced. I received an email from them stating that the part needed to be ordered and it would take 2-3 days. I was given an estimate number (11299) and told to contact the booking dept with this number so they could order the part for me.<br> <br> I contacted the booking dept on Thursday (30 July) to order the part and the lady said I can come on Tuesday (4 Aug) but I told her I could only make it on Wednesday (5 Aug). I received an email and SMS confirming my booking for 5 Aug.<br> <br> When I arrived there (5 Aug), I signed a couple of forms and waited from about 8.30 AM to about 9.20 AM only to be told that the part had not arrived and they would contact me when the part did arrive.<br> <br> Why would I be told to come there when my part had not arrived and then to still wait almost an hour before being told the part wasn't there.