Ordered a voltage regulator for my Volvo s60 (10/1...

Ordered a voltage regulator for my Volvo s60 (10/19/18) and paid for two day shipping. I got the part in two days (10/23/18) but, it was a knock sensor for a BMW! I called customer service the next day (10/24/18) and they said the correct part will be sent out overnight delivery and I'll get it 10/25/18, Well here I am still no part!!!! Won't be shopping here anymore!! No car for almost a week!! Poor customer service!!!!!!!!