Refund is only available when the goal rank is not achieved at the end of the package. (Please note that the rank should be the time-period average rank, such as a one-month average or three-month average). In any case, the value corresponding to the ranking achieved during this period will always be deducted from the total received.
My website used to hover around page 13 or 14 in Google. Now I’m on page 2 and still improving! This is an amazing service!