My parents came to US in 2009 to visit me. The effective date on I-94 form allowed them to stay in US for 7 months. After they left US, customer collected the forms and left no evidences about the effective date approved by immigration officer at customer in SFO airport. Now, they were rejected for new visa application to come to US due to this problem. How should we work it out with visa officer for this problem?
The usual time is 6, not 7 months. That could be part of the problem. If CBP gave them more time than is usual, your parents must not be penalized for it. In my view, contacting your Congressmen would help you.