skent7511, welcome to FT, and welcome to F9. I understand some of your concerns, but please allow for me to comment. You touched on the key point of Classic Plus -- you needed the possible 100% refund. This is a huge benefit of those who fly F9. If you needed the flexibility of a refundable fare, all carriers I know of require you to buy the "refundable" fare, which is generally a full Y fare. Depending on how far in advance you purchase your ticket, flight availability, and routing, you will find that the Classic Plus fares offered can be significantly lower than a full Y fare. And as your admitted, it was only $70 more from the economy (lowest) fare to the Classic Plus (refundable) fare. It's a rarity that the difference between the lowest available fare and refundable fare is only $70. Sometimes it's hundreds, or even thousands.
Regarding the benefits of Classic Plus, you receive pre-boarding (you mentioned you did receive), free DirecTV (you mentioned you did receive), a premium seat (I assume you did not sit a middle seat), 2 free checked bags (if you did check bags at all), and a complimentary snack and premium beverage. The AirFair's information is largely displayed on the F9 homepage, and when you click on it, it specifically tells you what you get with your ticket. If you read under the drink/snack, it says "complimentary snack" and "complimentary premium beverage" which is singular, meaning one. Also, there is a question mark box by each item, stating you can choose one item from Grizwald's Gourmet Cafe and one choice of a bottle of water, alcoholic beverage, or energy drink.
If you didn't receive the drink or snack, then I can see you being possibly out $10, but to pursue any recourse from F9 probably won't get you anywhere. The bigger picture and selling point for the Classic Plus fare is the flexibility in terms of ticketing. While you may not have used the ticketing options available due to schedule changes on your part, it was there, and available the entire time. Sounds like everything else that came with the ticket was available to you, and provided.
I don't justify you not getting the drink and/or snack, because you certainly were entitled to it, and shouldn't have had to pay for it. But did you kindly ask the F/A if one or more drinks/snacks (even though it is only one) would be provided with a Classic Plus fare? If you were indeed on a Classic Plus fare, then you were on the manifest as booking so. Or perhaps that F/A didn't have the manifest? Hard to say without being there.
No attack intended, just trying to have you look at it from the F9 side. But either way, again, welcome to FT and F9!