I changed my outbound date and despite phoning twice a day for the past three days the new ticket has not been issued.

However, I went to united.com this morning and tried to upgrade it.....and...it worked! Looks like the old ticket number is still in the record (at least thats what the e-ticket receipt on united.com shows me).

I'm now worried I'll be charged for a business ticket when they eventually get round to ticketing this. On the other hand I don't want to call for seat allocations in case the take away the confirmed upgrades.

What to do?