I bought petrol last week from Woolworths Petrol. Checking credit card statement and I see a charge from EG Group. So I have to go to Google to look up EG Group and find its a British company that owns Australian petrol stations amongst other things.
Why not just have Woolworths Mt Ommaney on credit card statement to make it easy instead of meaningless trading names? Too difficult to do?
Its the way it is, ie, who processes the card transaction.
At least we or I know, and you now know, who EG is, and in the end, they will all transfer to Ampol (I believe).
Most places I buy from now, I just say "no receipt thanks" and the person behind the counter does not have to do anything, but some places, it will still print, no matter if you say no receipt.
They then have to throw that small piece of paper in the bin.
Most places these days, their EFTPOS receipt that is, do not show the first 6 digits of the card anymore, they just show "xxyyx641abqzz" or what ever.
What irks me though, as similar to your situation JohnK is, when the processor of the card, does not bear any resemblance to the place you bought/I bought items from.
Asian grocers can be like this, it might (Upper Mt Gravatt Asian Grocers)/Takeaway on the store front, but the card processor can be "Ah Wong Nominees".
In South Aust we don't have 7elevens, and even our BP petrol outlets here are under OTR who have onsold all their stores to Viva, who own Coles Express now too, so Viva energy might also appear if you buy from a the Pikenba outlet, you might get a Viva receipt.
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What cheeses me off... Companies hiding behind poorly designed technology in post COVID era to not fulfil their promises.
From Qantas to Woolworths to to Telstra to Coles I have constant missing entitlements and wrongly applied discounts, after keeping up my side of the bargain and spending what I need to in order to qualify, I have to constantly chase them up by being on the phone during business hours (since they all abandoned conveniences like chat / email support post pandemic) as if it is my day job...
I found out that FlyBuys travel are one of the worst offenders, in that they promise 1 FB point per $1 spent for hotel bookings via them, they very happily will take your $ for the booking on the booking date, even tho the stay might be months away, but the points never appear.
Life's too short for me to keep using my phone credit or sending booking evidence, tho some people take pleasure in doing it.
Have contacted FB in the first instance, with a claim.
Girl says, after asking for my FB #, etc, sorry, can't help, contact FB travel.
Did that, sent in a claim, promises, promises of points in 7 days, nope.
But have learnt a lesson, not booking with them again!
Will book direct with hotels and get the 5% off for booking direct, and putting in my hotel membership # in the booking.
Thought FB was quite good, but turns out, nope.
Then contacting the airline frequent flyer people to point this out and being told “no dice; boarding pass shows non-earning fare class”. 
Yes, I know it was his fault but first time this has ever been an outcome. 
