Pensioner destitute in uk

My moms accounts were wiped out. All her debit orders gave bounced. She is 63 pensioner penniless in the uk. We have sent them my uk number but to no avail. They cannot call her on her phone its cut off due to non payment reference number ***8. This us beyond unacceptable. My number us uk ***56. I am taking this to the media and banking ombudsman