Bad service

For four months I have paid my Jet account via eft deu to the COVID19 pandemic.As soon as it was save to go into the shop I went to buy some clothes.When I got to the pay point I was told I didn't have enough credit on my account.I told them I payed via eft and showed them the statements from my bank.They told me they would update it on Monday.Today I went again and yet again they told me the eft's doesn't show on their side and the last payment they have of me is about 4months ago.But the eft's shows on my bank statements and this is bad as my children needs clothes and my credit score are being affected by this as I never missed a payment.How can such a big company as Jet be so disappointing and disorganized?