Gold building disaperard during upgrade what's the best header suppor to get it back?

[dads]

My water treatment plant just disaperard during upgrade.
I didn't sell (at least not to my recollection) it it just vanished it was there yesterday then I upgraded it now its gone.

I obviously want it back as quickly as possible what's the best header when I send a ticket in?
They will give me it back won't they? & if so will I be waiting weeks? I.E is supprt backlogged?

Sorry for so many questions just days before the event is obviously a loss I could really do without.

Any Ideas on best way to word it so I get it back quicker would be really appricated.

Thanks.