I ordered a re-manufactured ACDelco power steering pump from Amazon with the link to the Core Charge rebate center. After receiving the new pump, installing it and packing up the old pump to send in for the $45 core charge refund, the web site that ACDelco has asks for Amazon order number, I type it in and it comes back with red error message stating not a valid order number it can take two days, which I don't understand since it's been a week since I received the pump from Amazon? I contact the 800# for ACDelco and the person takes all my information and says someone will call me, no one called all day. I contact Amazon online chat, talked to no less than five different people on live chat in one hour time frame and had to explain the situation to each of them with no results at all, totally useless people Amazon has outsourced that live chat to. Now I sit waiting and holding the bag on $45 core charge I was promised in the sale on Amazon I would get refunded. I can't print the core charge refund form nor request a FEDEx label as the instructions say I would be able to do. Very disappointed