Bad service

Still no response from woolworths they have Rob me my 5000.its been 6 months now when I called them they said they can't find my account but I receive statements from them every month. When I asked them about the 5000 I paid at ermelo woolworths they say they do t have my name on their system. Woolworths is bad for me they have treated me so badly. They always asks for my ID no everyday I always gave them but now I am tired.