Insurance companies strictly warn motorists to never admit liability and to refer all cases to them. When a representative of the other person’s insurance company contacts you, you can bet that their only intention is to prove that you are the guilty party and therefore liable to pay all the bills that arise. It is therefore unwise to try and contact them.
In some cases, the other person’s insurer might contact you after getting details of the accident. Should this happen, you should only give them general info about the damage to your car or the injuries you suffered. Details about the cause of the accident should be left to the representatives of the insurance companies.