Where do I start?

The potential of this trip could have been brilliant, however as, the fact the company tried to lie about there mistake ruined our first anniversary get away in 4 years.

So let's go over the areas that caused issues.

1 - your advert clearly says, 90 minutes from Athens. ( It took 4 hours to reach the hotel from the closest airport)
2 - you state all facilities are available without any warning this could change. ( 75% of the facilities were closed )
3 - all inclusive to cover all meals, drinks, snakes without showing any restrictions. ( Very limited menu and this excluded basic things like coffee, juices, teas ect )

Ordinarily I'd try and think they wasn't to blame, however I brought all this to them and they tried to lie, I then showed them evidence and they lied, I have now done a full breakdown covering all the areas of issue clearly and now they are just ignoring me.

Avoid unless you want an untrustworthy company.