I have used drop box for many years for free and had accumulated 5.75 Gb of extra storage space from inviting friends to dropbox. For the last few years I needed more space so got a Plus account. Recently, I downgraded back to a free Basic account and, although in my history still says that I have earned 5.75Gb of storage space, my account has reverted to only the 2 gb that one gets when signing up for free. It seems impossible to contact dropbox support. Does anybody know how to get those lost Gbs back??? Many thanks in advance