GB's of data usage over VPN even when I'm not connected

[J89eu]

Hi all

Bit of a worrying issue but I am using the "Traffic Totals" package and if I choose just my OpenVPN connection I'm getting a lot of data used on it. I have no idea why as I can never see any other user connected to it other than myself.

Here's a screenshot of the traffic totals:

Any help much appreciated!