I have two sbcglobal.net accounts. The primary account is working fine on laptop, iphone and ipad. The subaccount is not receiving emails on my laptop only. Iphone and ipad are working fine. I have an error message that states account is not syncing with Yahoo. I've tried everything I can think of as well as spent literally 4 hours on the phone with AT&T and 3 levels of tech support. They claim its not their problem. So what do I do?