I should maybe have rephrased what I said to include dis-satisfaction with your FTO for reasons other then quality of training, such as broken promises, iffy safety standards, unreasonable charges and demands of money upfront etc.
You just need to read through the many threads on this forum to see how many unhappy customers there have been with their FTO's, to the extent that a moderator considered a sticky regarding JAR schools from a particular area was deemed necessary.
Golden rule and one I ignored myself, ALWAYS visit a school before committing, and do not ignore opinions on the school from previous customers, they have them for a reason.