Key Delta Pinetwon second time Incorrect Parts supp**** after paying.

Its now the second time when purchasing parts from the above company, I received the wrong parts. That's after confirming it on their part catalogue. The first was a driver side weather strip and now recently they don't seems to know the correct radiator cap for a Isuzu D/C. I would rather be very vary in paying and then receiving. They don't have a great return policy in parts they incorrectly supply.