I had to have the back seat cover of my Leon Cupra replaced, the part was on back order and took about a month.
To make matters worse I had reported the fault to SEAT who wouldn't do anything until the dealer had inspected it then I had to book the car in to get it replaced, so it dragged out over 2 months and by the end I was wanting to sell the car anyway but couldn't until the seat was fixed.
Shocking really since I've had none standard parts from other manufacturers delivered overnight.