Who do I contact to make a payment on a cruise I purchased?

You'll need to contact whomever you booked your cruise through for assistance. 

Shipmate price searches allow you to compare prices from multiple travel agencies and cruise lines in one convenient place, but your booking is handled by whichever site you booked through. 

Not sure who you booked your cruise through? Check your e-mail or credit card statements to see who charged your card.