Two different IT34's

Good Day. I submitted my tax return on e-filing. I got an It34 stating an amount to be paid back to me. I then realised that their was a R4 difference on my laptop depreciation. I corrected it and resubmitted my Tax return (as they requested laptop invoice and figures need to match) I did the calculation and it showed about R4 less that I would be receiving back. But I then received another IT34 stating that I owed SARS R4. Which IT34 is correct? I changed an amount by R4 I can't possibly lose all the money I was getting back and have to pay SARS?

You need to read the two ITA34's together, have a look at the second paragraph on the assessment which will show the balance on the account.