Not honoring excess waiver

We have used EconomyCarRentals before and noted no major issues. We always opted for the damage excess coverage. However, this time we actually needed to lodge a damage claim and after more than a month of constant follow-ups have received no indication of if/when the claim will be settled. They keep on blaming their ‘provider’ for the delays, but do not seem to be interested in closing the matter and assisting a loyal client of many years. I am very dissatisfied and will never use this company again.