Debit account early

On the 23/06/2015 Miway debited my account early with out even informing or confirming with me if my salary date has change, i got charged from my bank and after i complained i was refunded , now again July , my account is again debited on the incorrect date. i am expected send through my bank statement to be refunded and i also need to provide for my debit order and this will go off on the 11/08/2015<br> I am trying to understand , why my pay date has change with out my instruction and where they expect me to get money on the 11/08/2015 , when my instruction was and still is that my account needs to be debit on the 25th monthly.<br> this is a really inconvinience and all they keeping saying is , its the system and and and and