Call INS and ask them to generate another EAD with correct name.
If you are not able to get them in phone, you can fax them with copies of the current EAD. A# and receipt number required. find fax number from your service center link in INS website.
If that does not seem to get you anywhere , you need to send the EAD with receipt number, A# details back to service center.(maybe you want to file I9 before
