KIA Motors review: waiting car's spare part 2

Dear Sir, I 'm waiting for car's spare part for 2 months. As today, Kia still don't know when the part can be arrived in the workshop. what a ridiculous service for a car that still under warranty but have to wait so many months for the spare part. I have been calling and made complaint report but seems that Kia unable to help customer's problem at all.
Very disappointed.
Car number : PML5529 Kia Rio.

Pls take action. thanks