undead nightmare

OK so like I had seen that this one gamestop had undead nightmare. if u know me u KNOW I absolutely love RDR1-2, and yesterday I started rdr1 because I called gamestop during school to ask if they had undead nightmare cuz I saw it on their site the night before and I just really wanna explode zombie heads!!! they told me they had it so I was like "okay so kool can u hold it 4 me?" n they were all "no sorry we can't do holds :((" so I was like okay kool whatever I'll get it after school but after school I called again and again and again and no answer and I checked the site and now it's unavailable????? I mean who else is autistic enough about rdr in my town to buy an old ps3 copy of undead nightmare?????? this is so sucks but imma call later today and ask if it's still available WISH ME LUCK!!!!