MSC - WORST CRUISELINE EVER!!!

 We were on a cruise with MSC DIVINA from Rio De Janeiro - Miami.
This was the WORST experience ever!!!!

The buffet food was the same for 20 days, the staff in the reception was horrible! 
And it felt like the ship was more suited for italian och portugese people. 

BUT the worst was the disembarkation in Miami. 
Due to a gasleak in the terminal we had to wait for hours. Imagine over 2000 people in the terminal. It was CHAOS!
We had an excursion too. But when we finally got outside the terminal, there was some MSC staff holding a MSC sign, telling us to take the bus on the other side. We then asked about our excursion. The lady told us it had been cancelled due to the gasleak. So the bus would take us to the airport right away instead.
We were told to get in touch with our Msc office back home to get our money back. So we did. We still had the original tickets of the excursion and told them all about the gasleak. 
But the respond we got was horrible! They basically told us that we're lying about this. That they have contacted MSC's office in Italy and they are telling us that there was no gasleak, that we just didnt turn up to the excursion. So we're not going to get our money back for the excursion which was CANCELLED!!
Ive never been so badly threated before!
Now they are just saying "Sorry we cant help you anymore".

How can a  big company like MSC tell their customers that they are lying? When other people have written about the gasleak on different reviews sites on the Internet. Im speechless! 
I've never in my entire life met a company as MSC before who lies and don't care about their customers as soon as they have disembarked their ships!

I will NEVER recommend MSC to ANYONE. This has been the worst experience ever!