Bed client treatment

Am so disappointed with how Absa treated me as a client, I have a personal loan with Absa that I know it’s my responsibility to repay, however, I spoke to them and made arrangements to say this month I can pay half installment since I got a salary cut at work. Absa agreed with me that they would debit half and give me at least 2 months to sort myself out, but now they have debited all my salary, and I don’t even have R100 to buy food. I don’t know how am I going to survive with my family. Am deeply hurt.