Jetstar Customer Care experience?

In summary, I accidentally bought the wrong dates (oops on my part) and realized it half an hour later. In a panic, I quickly called their customer service to change the dates and was told that I was eligible for the "One-Hour Quick Fix," which means I wouldn't be charged for changing the date and time of my flight. I provided the new dates, which were later and clearly cheaper on their website than what I had originally paid for. However, the representative said I would need to pay an extra $90.

Perplexed, I asked for the price of flights on the new dates, and suddenly the line cut off. Panicking, I tried to change the dates myself with just a few minutes left, but ended up having to pay an extra $80 per ticket. While trying to call them again, someone finally picked up. I explained what happened, and after another 20 minutes of being put on hold, they said they would create a case to see if they could “compensate” me for the situation.

Just curious,has anyone gone through something similar, and how did it turn out for you?