Was that an unwise choice?

For my summer financial aid, they said it was not guaranteed that it would cover classes beginning June 6, 2011 or later. On the sheet it says that my particular grant only covers courses before that date. Two weeks after June 6, I call them and I'm told something different. Now, my summer financial aid WILL cover classes beginning later on in the summer semester. Was it unwise to not even register for those classes, when the financial aid coverage was still unsure? They told me they've just determined that it will cover those later summer classes, that initially they told students it wasn't guaranteed.