For my benefit I have looked at the figures from the first two...

For my benefit I have looked at the figures from the first two quarters of 2019 which are summarised in the Half Year Report which is independently audited as you say.

Quarterly Report Q1 2019: Revenue = $0.99 million Customer Receipts = $0.6 million
Quarterly Report Q2 2019: Revenue = $1.87 million Customer Receipts = $1.12 million

Adding the two results together we get Revenue = $2.86 million & Customer Receipts = $1.72 million

The Half year Report reported Revenue of $2.83 million and Customer Receipts of $1.71 million

Without trying to turn a banana into an orange, I can't see any major discrepancy.