Absa Atm my Money and Absa refuses to pay full Amount

My name is Ethel Bizane a pensioner who depends solely on the government grant for a living and to support my family. ON THE 11th of october I went to deposit R1600 society money into Absa ATM to my bank account in ROODEPOORT CBD however the ATM swallowed all the money and returned a receipt written Deposit unsuccessful and didn't show the Amount on the receipt , I then immediately phoned Absa to report the issue , thinking that they were going to send someone immediately to come help get the money out and was told to go to the Absa branch at the branch they told me that they will investigate and get back to me as soon as possible. Today A consultant from Absa calls me and tells me that they will only give me R1200 because that's all they found in the ATM and they will be closing my case ref no C***9. When I try to explain to the consultant that the money was R1600 society money it wasn't mine they need to refund it all, Absa bank refuses to refund the money . I'm am stressed and have not been sleeping for days thinking about this money , how am I going to pay the extra R400 as I am only depending on my grant for survival . Absa is taking advantage of me because I am a pensioner and I don't have any lawyers to help me and no one will help me to fight this. Absa please pay back the full R1600 it's not my fault that your mechine mulfunctioned and stole all the money now I feel like this is something they do deliberately in order to take advantage of old people like myself . I am a spiritual person and I would never lie and I won't be able to pay back the R400 from my pocket ,I have grand kids who depends solely on me because their Parents passed away . They should have sent someone immediately to come take the money out and not wait one week and then tell me that they won't pay. Absa Staff is responsible for *****ing this money.