No warning about changes!!!

For the past few years we were PDA clients without any problems. Last month we went to the branch and had no problem to get our money. Friday (1 April) we went again to renew our PDA just to be informed it was denied due to the criteria being changed!! They already took the money out of our account on payday but without any notification on their behalf changed everything..... So now we are without any money this month to survive as the PDA money was part of our monthly budget. How can you just change important stuff like this without warning your loyal clients in advance!!!!