Poor Service and Credit Limit Decreased

hi,<br> on the 18th of November i got an sms at 20:02 notifying me that my credit limit was decreased without my authorization and this also in turn put my account into the red so it was decreased lower the amount i already used. so i phoned fnb customer service and they logged a complaint for me and said the complaints department will sort it out, i received a call on the 23rd saying that they have received the complaint and they will get back to me once it was sorted. on Thursday the 26th i called customer service again after not receiving any feedback and spoke to the team leader. he apologized for the inconvenience and told me he will get the complaints department to contact me as soon as possible. Then i called yesterday to find out what was going on and i spoke to Onica Makoko and she informed me that the complaint closed with no response and then she said she would investigate further. i'm expecting a call from her today at 3.<br> <br> now i am getting very annoyed at the fact that FNB decided to reduce my credit limit when i have never had any late payments and that the reduced it by so much that i now owe FNB a large some of money that can in turn can ruin my credit record.