Weird points calculation at Qantas Frequent Flyer

My wife and I travelled with LAN/TAM last year, together.

I bought 2 tickets at the same time/session, that is, same price and conditions for both of us.

I entered both of our Qantas Frequent Flyer numbers at the time of the purchase. LAN/TAM is a partner of Qantas, they also do codeshare in this flight. LAN's website had a field to enter the Qantas Frequent Flyer when buying the tickets, that's what I used.

However, the points we earned and our Frequent Flyer statements are totally different.

We made a flight from New Zealand to Brazil with stopover in Chile.

My statement looks like this:

Date         Description                                                         Points
29/OCT/15    LA 753 DISCOUNT ECONOMY/ECONOMY 24OCT15 GUARULHOS INTL/SANTIAGO       402
29/OCT/15    LA 801 DISCOUNT ECONOMY/ECONOMY 25OCT15 SANTIAGO/AUCKLAND           1,504
08/OCT/15    LA 5951 ECONOMY 01OCT15 SANTIAGO/GUARULHOS INTL                     1,607
08/OCT/15    LA 800 DISCOUNT ECONOMY/ECONOMY 01OCT15 AUCKLAND/SANTIAGO           1,504

That gives me a total of 5,017 points.

Hers statement looks like this:

Date         Description                                                         Points
01/DEC/15   LA 801 ECONOMY 25OCT15 SANTIAGO/AUCKLAND                             6,014
01/DEC/15   LA 753 ECONOMY 24OCT15 GUARULHOS INTL/SANTIAGO                       1,607

Her total was 7,621 points.

My question is, "why is everything different", but I can breakdown in 5 questions:

Why are the dates different?
Why are the description for flights LA 801 and LA 753 different?
Why did she earn more points than me?
Why didn't she earn points for flights LA 800 and LA 5951 (NZ to Brazil)?
What should I do?

More info:

Our E-tickets, for both of us, shows that the flight NZ <-> Chile were Economy-O and Chile <-> Brazil were Economy-B.

Also, there is a Fare code OEESP60Y for all flights and for both of us, which I don't know what it means.

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How are Qantas points calculated?

The way to calculate the value of a Qantas Point is by dividing the item's retail/dollar cost by the number of Qantas Points you'd need to buy the item. This easy process works for any other rewards program and will help you get the most value out of your points.

Where does 120 000 Qantas points get you?

Snag up to 24 business class upgrades If you wanted to make the most of your points by enjoying as many comfortable journeys as possible \u2013 rather than just one or two long flights \u2013 120,000 Qantas Points can give you as many as 24 one-way upgrades from economy to business class on short domestic flights.

How far will 100 000 Qantas points get me?

Your 100,000 Qantas Points could get you anywhere from two to 18 Business Class upgrades on Qantas domestic routes, depending on the fare and distance travelled. It takes just 5,400 Qantas Points to upgrade from Economy to Business on flights under 600 miles (965km) from a regular flexible (Economy Flex) ticket.

How much are 10 000 Qantas points worth?

So if you've got 10,000 Qantas Points on hand, they would be worth as little as $50 or as much as $600 \u2013 and naturally you'd be eager to avoid the 'chump change' end of the spectrum.

Ch 1 - How do Frequent Flyer Points Work? - Point Hacks

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