PartSelect Never Sent What I Ordered Internet

I made my first order for a replace cooktop on my range on January 4th. When I received it, I didn't even open it. I could tell it was completely shattered. I called them, they refunded the order and placed a new order for what was supposed to be the correct one. I was supposed to dispose of the shattered cooktop. I received the new part in one piece but when I opened it, it was white. My range is black. I called partselect to advise them of this and they had me call Whirlpool to make sure it was the right part. Here is what happened, I ordered the right part, W10719620, and they sent me the wrong part, W10719621.

They send me a label to ship that part back to them which I did and they advised me I would get the right part shipped to me. I got a phone call about a week and a half ago advising me they had shipped my part. I still hadn't gotten it so I called them to see where it was. I was just advised today, Feb 5th, that the warehouse never sent it and supposedly gave me credit for the order. Does that mean I'm not getting it? After a month of dealing with these jokers, I just have multiple charges on my credit cards, a range I can't cook anything on, and apparently I'm back at square one. I would NEVER EVER deal with these people again. I can't believe the service was so horrible and there is such a disconnect between customer service, the warehouse, and the customer. This is completely unacceptable.