Be careful when you pay with multiple cards!

The best thing about this cruise are the employees.  Our stateroom attendant, Joemar made us feel at home.  We had our "personal" cocktail server, Wayan.  Can I say amazing?  He made sure our drinks stayed full and our bottles of red were chilled as requested during our dinner. Martin, our server knew excactly how we like our steaks after the first visit and his suggestions were spot on.  The staff at Carnival Splendor deserves recognition because they all went above and beyond and made us feel very welcomed. We learned a lot about them through our conversations and I feel like we became part of their families.  I would go on this cruise again just to see them.  The reason why I gave this a three star is because when it was time to pay for the cruise, I had to pay with multiple debit cards because I had a major purchase I hadn't planned on.  I bought my husband a Tag Hauer watch and I told the salesman I needed to pay with two cards and he said to put it on my sign and sail card because he wouldn't be able to split it but I would be able to when I pay the bill for the whole cruise.  I did just that only to find out after the cruise they had charged it all to the wrong cards causing 3000.00 worth of pending transactions each on all cards and ended up  posting on wrong cards,  I called Carnival cruise line to tell them and even though it was their mistake (customer service admitted it) they couldn't do anything about it until I could give them bank statements to prove it was posted on my accounts.  I realize, this whole problem started with my request to use multiple cards but if it was difficult, they should've told me in advance.  I would've just transferred money into one bank to prevent this mess from happening.  I'm still dealing with this mess.....