Ridiculous Bank Charges!!!!!!

I am very unhappy and seriously unimpressed that I am being charged for certain unsuccessful debit orders. The two I want to dispute don't make sense cause there's a contract stating the companies would collect either on the 25th or 26th. I shouldn't be charged just because those companies suddenly changed fees the dates to 14th cause of December. They cannot assume people will be paid by then, a lot of companies follow the normal payment cycle even in December. I did not agree to the funds being collected on the 14th so I shouldn't be held liable for unsuccessful transactions.