AITA for a about cutting my bsf off ?

i met my bsf a while back and we haven’t seemed to get along until this year, and honestly she only wants to hangout with me to cheat on her now fiancé. right now she is texting me about getting clothes she left in my old car back and i said yes when i got the time this week, she then said she would just show up this weekend, which does not work with my shackle beings it is already saturday and im always working and have to go get my new car fixed tomorrow, i stated my car was in the shop and i had my college classes monday and she said she would come at 4 which i will be at work, would it be wrong if i just ghosted her and told my roommates not to answer the door for her? (a little context i rarely hangout with her and she purposely leaves things at my house after i give them back and it’s a repeated cycle and i have stated multiple times that im over having to rearranging my life constantly to deal with her lack of care for my space and time, she also tends to go thru my phone and other things i own, and ever since moving with her fiance she has been more distant and more controlling and lets her fiancé talk to eveyone like there stupid n need his view on there lives)