EXTREMELY ANGRY CLIENT

This is the worst company ever. i called them last month to change my debit order date. nothing happened. today i called again and was told that they will send debit today. i get an sms with wrong amount to be debited. call center agent promised to call back but well as usual nobody called me back. now i want to understand 1 thing. how much more professional can they get .. MY FREEKING DEBIT ORDER WAS SUPPOSED TO HAVE BEEN DEBITED ON 20TH AS PER MY REQUEST. EVEN THEIR OWN DATE OF 22ND IS TOO MUCH FOR THEM .. FIX THIS ****** THING.