Try not to worry too much I know it's quite a shock, but it's common to have a slightly higher BG on your first HbA1c test after going onto the pump.
For a lot this will be because they are avoiding a lot of the hypo's that they used to have, so they aren't artificially lowering their HbA1c with hypo's masking the highs, then on top of that you've got the settling period as you start sorting out basal rates, carb/insulin ratio's.. Then you've the working out of which of the 3 bolus's suit what meal/snack effectively.
Just keep concentrating on day to day control, tightening your range and lower this, your HbA1c's will start looking after themselves. As the more experience you get under your belt the easier it gets making control decisions when you faced with a new situation you've haven't handled using the pump.
It actually take around 6 months to really start flying with pumps..