Refusing to pay accident damages

Anyone who can help me legally against this company. I was involved in an accident 16/April /2022 with this company's client and after all documents was forwarded to them for months they went awol. After a long time then they contact me demanding damages to their car🤷🏽‍♂️. How so because their client was wrong.

I asked if they received the AR they said so but I can email it to them. I did so for sometime they went quite then suddenly they wanted to distance themselves from the incident claiming that's not their car. How because it's them who contacted me and wanted me to pay damages to their car but suddenly it's not theirs any more.

So they went awol again after I proved the car is theirs and after sometime they resurface with letters of demand. Now this time the report has been turned around am now the guilty part but the AR report can't be changed even if they can twist the story.