Not helpful on booking cruise

<p>I eventually receive a cruise voucher from Glocell for their promotion and have to contact MSC directly. I thought this was geting somewhere. Little did I know.</p> <p> </p> <p>I check online and try book a cabin - it is available but I have to phone MSC to use the voucher. I eventually forward all details over the phone and have to confirm via email. On receipt of the email I am told immediately that the cruise I have selected is not available despite being available to book online. I ask what cruise is avaiable and am told to just choose one online. I already did this but clearly my choice was not available. On choosing another cruise I then must go through the whole process again! Ridiculous!</p>