Incorrect monitor shipped

I recently ordered a new Dell Computer and a monitor with specs needed for my graphics needs.

I received the computer and a very basic monitor not what I ordered. This was feb 6th when it arrived.

I was told it was an error and to be patient a new one was on its way. Feb14 I called in and no one knew anything about it. I went through an hour on the phone and was told it would ship immediately. I waited and called again a few more times. On March 1, I attempted to escalate the process but was put from person to person eventually back to an automated response. Then after 90 minutes on the phone a customer care rep said he approved it to be overnighted with a call tag of some sort for the wrong monitor.

Today I called since it never arrived and was told there was not even an order number generated for this item.The person said they were not able to speak with me, only the specialist handling the case.

I have been purchasing dell products for 12 years and though never perfect, i have never been more disrespected. 

Can anyone tell me if there is a department to handle my concerns?