The website only transfers up to 1100 (or maybe 1200 now) minutes, regardless of how many you have. You should have had to confirm that the amount was correct, at which point you would have seen it was not all your minutes and you should have backed out of it. Did it not ask you to confirm your minute balance before proceeding with the transfer?
You'll have to call customer care to get the remainder of your minutes unfortunately.
Castrol EDGE 5W-30 is my drug of choice.
Toyota | let's go places
Primary: iPhone 5S and LG G2: 5 lines, 1x $15 5GB data, 2x $5 Android web, 1x $2.99 T-Zones, myFaves, corp discount + $10/mo loyalty discount = $88/mo tax inclusive
Secondary: iPhone 4 & Optimus Dynamic II: TracFone (Verizon); Galaxy Epic: RingPlus (Sprint)
Tablet: iPad Mini Retina w/ T-Mobile 4G LTE | Galaxy Tab 3 w/ T-Mobile 4G LTE