loosing emails and text messages bold 9330

[jv1974]

blackberry are the only phones i have ever had and i never had this happen before.  my phone is set on "keep messages forever" on all email accounts.  only 1 email account is holding old messages.  same for text, is set on "save forever" but whatever message is 1 month old gets deleted.  even in a conversation that is several months on going.  is it my phone? or verizon?  or the email carriers??  any help out there>thanks