i could not update my personal details

I went to capitec promenade yesterday to update my personal details to avoid having my bank account froze, I enquired earlier in the day as I lost my wallet with Id and all credentials and asked if I could update my account using my South African passport as it is a positive identification, the gentleman told me he don't think so but I can inquire and if not then ask for an extension until I have my id, at the time the bank was full and I said I'll come back before closing which I did, I spoke to the lady at the front desk and was told I must have my id and proof af address, I then explained to her as I did the earlier gentleman that I do not have my id etc. as well as my salary is being paid late into my account and I do not have cash and was unemployed for a few months and this is my first salary for the year, explaining that without money I can't pay for my id which is going to result in me losing my job, what then? I have money but can't access it, without cash I can't travel and if I can't travel to work I will lose my job and still be without a Id and funds? How sensible is this system? If I lose my job I am taking this further and won't give up!!!