Unbelievably dreadful and slow service for Toyota Parts with no recourse

My car (Toyota) needed a part (that the car can not operate without) the part was ordered on the 6th May 2018 and was told that the part needed to be shipped from Japan (to Cape Town) and would take 2 weeks (24th May 2018).

On the 24th I enquired about when the part would be delivered I was then told that the part would only arrive in Johannesburg the 30th of May and then would be another 3-4 days before the part is sent to Cape Town (from Johannesburg).

All I got from them was there's nothing they can do, they can't ship another part using faster shipping because what would they then do with the initial part, after some argument and emails, the response was just that they acknowledge my frustration and apologise as if that fixes the problem of me being without my car for another 2 weeks ontop of the 2 weeks that I was initially told and thus made arrangements for. Making the excuse that it was delayed at customs, after saying that it has not yet reached South Africa so could not have any customs issues here yet.