I bought the complete first season steel book edition. I upgraded to goty edition but I didn't know that requiem blood money and bonus missions were in the form of a code in my game box and ended up spending £4 on the requiem pack and THEN i discovered the code. Can i get a refund? How do you get a refund?

My PS account email is

arkhamninja9@gmail.com

This is the code that i discovered and have used to get the bonus missions:

4E34-JDN8-28LR