disappointing

I am a customer of 33 years rarely in overdraft and my credit card cleared monthly.At 72 years the German Finance Ministry inform they are taxing me for year 2008/9/10 on my german pension.I requested Standard if they can increase my revolving credit by R30000 to R80000 to enable to pay without using my savings account as I rely on this interest to live.Standard are executors of my will on my estate worth R1.5 million yet they declined the increase .The agent in question said she would motivate and call me,this never happened and only when I went to the branch again did I find out.I am assured by a collegue who works at the next biggest bank that would not be a problem .Why then am I treated so shabbily by Standard ??