Made a mistake on my Universal Credit Review call

I am an appointee for my sister and on a UC review call yesterday we were asked about savings and the breakdown at 11th Feb which was assessment end date and I said £2219 and the breakdown I said was £1010 cash, £450 savings and £759 in current account. The gentleman said do you have an account with the current account figure and I said no and then I said yes we can check it off the statements I provided to you as 11th Feb is on it so I flipped through the statements in front of me and the balance at 11th Feb was £168.41 so I was flustered and corrected the breakdown to £1629, £1010 cash £450 savings and £168.41 current account and said I'm sorry I was wrong. I am still awaiting an Isa document being sent to upload and I have a confirmed savings statement from bank to upload so at end of call I asked the gentleman if all was ok as my sister gets anxious and he said" eh with thee eh with thee, this is an appointment that I need to carry out and when I have completed the review I will pass on to relevant dept that's all I can say just now" I then said ok will you set up to do lists for me to upload the statements when they arrive and he said just keep an eye on your journal. When I came off the phone I discovered the £759 that I had quoted for the current account as part of the savings was actually the bal on the bank statement at the 3rd Feb £759.19 and I had written wrong figure down. I wrote in the jnl as soon as I discovered this explaining this. I still don't have any to do requests or any communication since the review so a bit anxious that my silly mistake has caused issues. I'm going to write in jnl today and ask about the to do action so that I can upload what I now have. Has anyone any advice