Pensioners being de*****ed by **** at Tyme bank

My mother is a pensioner , a few weeks ago she was harassed by people who claim to be calling from Tyme bank , she declined their requests a few times until this one time they called minutes before her state pension would be paid . Out of panic , my mother answered and believed the story that someone is committing ***** on her account and that they would be assisting her to prevent that from happening .They managed to access her bank account as soon as the money came in and cleaned every cent .We opened a case but Tyme bank has not bothered to call and explain their findings , they only sent her an sms to say she compromised her details when they too had compromised her because the person who called already had her details , knew the exact minute the money would be coming in, and knew how their system works . On the basis of age , they could have investigated and dealt with this matter differently and sensitively .My mother was in distress, her blood pressure went up and had no penny as she only survived on this grant . She was forced to go to sassa and stand in those long queues again to change her banking details because we cannot trust Tyme bank anymore .