CSA failed my son!

My son was born in 1993, I applied to the CSA for financial help back in 1993, despite the fact that contact was made with the absent parent 23 years on I have NEVER received a payment. The CSA even contacted the absent parents company that they were working for(this was confirmed verbally to me by telephone at the time)the CSA completely failed my son, whilst the absent father was living it up not supporting his child.