Blacklisted for no reason

After applying for a personal loan on 29 July 2015 the consultant at Standard bank picked up that there has been a default placed on my name by Bluebean (Std Bank). Upon further investigation they found that this was an error made by Standard bank as all records show that there NEVER WAS ANY defaulted payment. After spending almost 2 hours phoning various people including Experian and Standard banks card division, the Standard bank consultant at their card division profusely apologised and promised to fix the issue which would be sorted in 2 working days. On 21 August 2015 I returned to the bank to eventually re-apply for this loan and they picked up that this very same default was STILL on my name preventing me from applying for any finance!! NOBODY I spoke to at Standard bank could help me. Ive lodged a complaint with their call centre who promised that one of their manager would call me back the SAME day (21/08) who didn't. I have still not heard anything from this PATHETIC bank! I am also still waiting for them to get back to me on another BAD SERVICE issue I logged earlier this month. You guys better sort this out by MONDAY, 24 AUGUST 2015 or I WILL be taking this further!!!!