If you don't get the answer you want hang up and call again.
This is my consistent strategy for dealing with the QF call centre.
So far I've had a 100% success rate.
They do have some wonderful, helpful staff who will go out of their way to look after high value customers.
You just have to get one of them on the other end of the line!
I adopted this after the first (and last) time I did mobile check in.
Found out the hard way it didn't allow you to select a seat.
Rang up asking if they could allocate a seat for me and was bluntly told "You can't have what you want. Deal with it."
When I asked to speak to a manager because I wanted to complain I was told "That's not going to happen." and then I was hung up on.
Called back, spoke to a supervisor, and was allocated an exit row seat.
Since then this has also worked as a strategy in your situation - having my friend who was travelling with me allocated a seat next to me in rows reserved for WP even though he was only bronze.
The first two agents flatly stated that it wasn't possible. The third one just did it.
Sometimes it's not what you want it's who you ask for it!