Celestyal Cruises Tracking Order Status

I haven't been on any cruise yet, just booked it, but I can see that the support you get after paying is rubbish . To start with, they seem to be clueless about the off shore day trips you can book. Calling them takes you nowhere, they provide no useful information. It's almost as if they don't want to sell you anything. But what's got me worried is that I paid the deposit and they gave me a date to pay the rest. Only a few hours later, they send me an email saying that I have 48h to pay the full amount. This is a really sneaky move and I haven't been able to sort it out yet. Right now i have no confidence in this company and even if I clarify the above, I don't think I will ever book anything else with them.