Error When Attempting to Update My Billing Information

Hello,

I need to update my billing information, but have not been able to gain access to the Adobe Store to do-so.  I have been trying since late last week, but am met with this error everytime:

Error

There was a problem in the store. If you wish to complete your purchase immediately, please call (800) 585-0774 (U.S./Canada).

I have put off calling in hopes this error gets remedied, but am beginning to lose hope. When I live currently provides me with very little in the way of phone reception; as a matter of fact, I rarely have reception any place I go nearby.  That is the reason I've yet to call and, quite frankly, don't want to have to.

Please advise.

Thanks for your time.