Bid signing for fraternity

Hi all, is it frowned upon to sign a bid and then get rid of it. I woke up a few days ago and my head was pounding and I barely remembered the night before. I checked my phone and friends of mine said they were happy for me that I signed my bid finally. I was so confused what they were saying. Turns out, some acacia guys brought me back and told me they needed to talk to me. My friend came with who just wanted to make sure I was alright and this is where I’m hearing this. Apparently I was so drunk that I signed acacia and didn’t even realize. I’m stuck now as they were one of my lower choices on the list and now I do not know what to do. Should I just drop my signing, the guys in my opinion really took advantage of me and I feel it’s only fair that I be able to do that.