Why would pilots "call the company" after an aborted takeoff?
An RTO can happen for any reason, mechanical, FOD, ATC error, etc.

The boss (airline operations) will want to know what happened.

Safety

Is everyone safe?

Is anyone in immediate danger?

Prepare documents for the NTSB investigation.

Time

How much time will be lost (e.g. to cool the brakes); this can affect the schedule of this particular plane days ahead. Especially if maintenance is required.

Notify the destination airport of the delay, and also publish the delay for the next flight from said destination airport.

Maintenance

Make sure the airline's maintenance stationed at the airport can deal with the issue.

If not, get on the phone with airlines who can help.

Find a replacement plane and send it over there.

Get the all-clear from an airline engineer that the hot brakes won't affect another attempt. It depends on how hot they are.

If a delay is expected, start the clock, airlines can keep passengers on a stationary plane for so long, I guess it's two hours. Been there, it's awful.

If it will take more, find them a gate, if no gate is available, get the stairs and a bus.

Whose fault was it?

Get a grip on the PR before things get out of hand, i.e. tweet.

If anyone is suspected of not doing their job properly, start an investigation.

If the ATC is at fault, send them the bill.

If it is another airline's fault, call the insurance company.

Fuel

Not really an issue for an aborted take-off after few seconds of take-off thrust, but nonetheless run the numbers again. Both in the cockpit and in the ops center.