From my experience (Kenya), there's very little PdProxy can do when the network carrier (in your case Vodacom) blocks the ports you were using. Especially if you were using it to access free internet. Try doing a port scan to see if there are any open ports.

My internet connection sometimes disconnects and connects again thereby disrupting the pdproxy connection. I've enabled the automatic re-connection if it notices network drops on PDproxy. This works fine but my issue is it takes around 2 minutes or more to notice the connection cut off. I'd like to reduce this time to just a few seconds so as to have a smooth internet connection and avoid downloads being dropped.

It's seems many countries are blocking the ports that PDProxy uses and this is affecting many users. I found that the only way most people can connect is through DNS tunneling which PDProxy unfortunately doesn't have. I wish they could upgrade this into there system so as to help out many users.

what port were u using?

@ BryanB are u talking about the orange 3G or orange 3G+ (CDMA) modem?

they blocked port 53 . i think like any good thing it had to come to an end.