His phone is linked to my DHs phone. DH spotted this late last night. We both feel sick and haven't slept as we haven't got this amount of money to blow. All receipts went to DSs phone and no alerts to us. DH has a zero spend cap on his phone and DS's phone is linked to his. DS, who is neurodiverse but not formally assessed as waiting on CAHMS list, is very upset but clearly didn't think about the consequences of racking up these costs and where the money would come from. DH is ringing our phone provider today (EE), any tips very welcome to see if we have a leg to stand on to avoid paying this money, I suspect unlikely though.