BF4 on PS4: Rented Server Issues

Not sure where to post this, so apologies if I've got this wrong.

I've rented a BF4 server on PS4 and, well, it's active and working but disappears from the server browser list. If I make a config change and it restarts, it re-appears for a short while but then disappears. This means nobody can find it to join it.

I spoke to EA online chat and they told me that I had to speak to Sony, as I'd rented the server via them. I know this is wrong and that EA are responsible.

What can I do?