Internet stopped working.

[Guest mehall]

So I took advantage of the Galaxy Tab Groupon deal and chose to decrease my T-Mobile Solo deal so I could afford it and the tab.

Right after I changed my solo deal, my internet stopped working but I clearly have the internet booster on my account (have checked my-tmobile)

Checked all APN settings and am running FLB-Froyo r11

Just wondering if anyone could help as T-Mobile want 25p a min so I can actually talk to a human being from my network and I don't have access to a landline just now.