Incoming text problem

[jeffy2walgreens]

So i have a sprint hero. i get text messages from bank of america every now and then informing me of my account balance. but when i receive a text from someone who doesnt already have a thread in my phone, the message goes into the bank of america thread. this problem occurs with handcent and chomp, but not the stock messaging app. the rom doesnt make a difference either. it happened on the stock rom, and now im using modacos rom. same problem. any idea on what is happening? thanks