The letter of the law and the application of the law are subtly different. More so in the Family Court than the Civil Court. This is why each Court has its own set of rules.
What you must understand is that the law is a stick which is wielded by the Court. It is not a stick which a litigant can wield themselves. You can be behind the Court or in front of it.
You can question the application of the law but appeals of orders are mostly unsuccessful and of the remaining, they are partially successful, fully successful or a pyrrhic victory.
You need to pick your battles carefully. Questioning proper service where the Court appears to be satisfied that this occurred is a waste of your time and, more importantly, the time of the Court.
As you have already collected a costs order against you, it would appear that the Court's summary so far is that:
1 Your ex has applied for a financial order
2 You are frustrating the process and denying justice to your ex.
3 The Court has signalled its displeasure by making a costs order against you.
The reason I reach those conclusions is that the Family Court seldom makes costs order unless it sees a clear case of litigation misconduct.
As you weren't at the hearing you don't know what was said but I would guess that the solicitor/barrister on the other side said that you knew of the proceedings and you had ample opportunity to attend or contact the Court to make arrangements for attendance remotely or - which is often the case with the FDA hearing - agree directions and vacate the hearing with an agreed order.
Non-engagement in proceedings is litigation misconduct. The Court will always find against a person on that basis as it wastes the Court time and blocks access to justice. Access to justice in this instance is the making of a financial order which is inevitable.
If you deal with the financial application by filing
form E and disclosure; exchanging and answering questionnaires, attending upon the FDR to discuss possible settlement etc. that will be time well spent and will foreshorten the process. This also allows parties to reach a settlement between them rather than one which is imposed upon them by the Court.
I offer the above as an insight into the operation of the Court, not as a judgment upon you as it's not my chosen role to determine such issues.
Charles