Dear K’Metta
Finally having studied the additional paperwork that P’Yui has presented to me tonight I think I do know what has happened here.
When PX presented us with the Final Quotation and invoice on the 2nd December it did not include previously quoted invoices, simply additional ones and therefore previous quotes of 11th November were not included in the Final Quotation presented on the 2nd December, am I right?
What is astonishing is that after 6 months, vast numbers of e.mails passed between our offices, meetings to discuss this between our teams and not to mention endless confusion and frustration, that no one was able to explain this to us, we had to work it out for ourselves with what has amounted to a dedicated file of almost 100 different documents and mails relating to this!
Wow, unbelievable!
I think we got there in the end but can I give you some advice from a sister company that has zero bad-debtors in its 4 year history, please simply present one final document including all costs to the client at the close of the event with all items and services included and one final price at the end (and please always be ready to be able to explain the invoice as it was in fact quite simply when the matrix was unraveled!!!).