TOTAL LACK OF CONCERN ABOUT MY PROBLEM

Did a booking through Travelstart for car hire with Hertz for a period during lockdown.During lockdown I tried to change the booking but was told to contact Hertz.Hertz changed the booking to 23rd Sept to 25thSept.I have called them to try and cancel this booking and get a refund.They say this is done through cartrawler who I had noteven heard of.I am being shunted from pillar to post with no resolution to this problem.Hertz arenot interested in helping me.So I suppose I kiss the money I paid goodbye.Will never never book again on a booking engine.Better to deal with the company directly and I am sure I would have had no problems.Shocking service from all involved.