Wells Fargo & Company Bank Account Or Service Complaint

Wells Fargo & Company Bank account or service department,

Checking account Deposits and withdrawals Pennsylvania

I deposited a check to my Wells Fargo checking account for $8900.00 on - -, 2016. The check was written by my sister on her - checking account. The check was processed and the funds were withdrawn from the - account on - - 2016. I have a copy of the processed check. Wells Fargo sent me a message to my online account the the funds were being held until - -, 2016 due to a bad signature. I was told by a customer service rep over the phone and also by my branch manager ( in person ) that the funds were being held because there were not enough funds in the - account account. - different phone service reps told me that the branch has the discretion to release the funds and the branch manager told me that there was nothing that she could do since the system put a hold on the check. I would like to know if I have any options to get my funds released and if this is a legal practice.