System Not Up-dated

So I have a loan account...... which I always pay in full after a couple months no matter the balance. Not once has the debit order bounce or you received a non payment. My store card I manage the same. On Monday 15/6/15 my account was on a null balance, I made a withdrawal of R 1 000.00 I was cautious not to take a lager amount. Unfortunately I require a further R 1 500.00. I was told this morning I am not able to make this withdrawal as the system has still not been updated from Monday. I am at a lost as this will be 2 separate transactions, why am I not allowed to make a second on? I have this account for as it is suppose to be easy to access in emergencies. I am told that I need to wait a further 4 days. So emergency...I obviously have to go to a different institution for help. I am a good customer that always honours my commitments to Woolworths.