How do I complain about Sony's Playstation service?

So I have two playstations one is my primary and one is my boyfriends primary. We came back off holiday and my boyfriends black playstation was no longer his primary. We tried everything it had been deactivated and deactivated on a third playstation.

Called Sony they blamed us even though it was removed online while we were away. He eventually removed the primary and said he would block the playstation that had stolen our pns details. We explained we had two so don't block our second one.

Three days later it is blocked for no reason .call Sony no help escalated it. Three weeks later after numerous calls and fob offs we get an email saying it was compromised and is banned until June. For clarification this playstation was never compromised it has never been my boyfriends primary and had no problems.

Complained again. 1 week later still no response. Complained again and was told we would have a call back. No callback. We are a month in with still no playstation and Sony keep fobbing us off so I want to write an official complaint as this is unacceptable that they cannot simply unblock the playstation for their mess up. We have been ignored. Hung up on and never once have I been rude or lost my cool with them.