Account hacked but no EA help

Hi

It’s been over a week now since I contacted EA and they said they’d investigate my issue. My son has had his team hacked and they have sold all his players and transfered his coins out the club. Aged 13 he’s gutted as had spent money and worked hard to get what he had. 
I’ve tried contacting ea through email and X and live chat but nobody is responding to this. As a parent I’m trying to sort this Asap for him. Anyone else had this issue and how long did it take?

Thanks