worst service provider ever

Im so furious with this people its as if they illiterate , they ask me to send them my details every time the same thing over and over again but they dont attend to my query they double deducted my account again due to their errors - they tried deducting my account on the 25th but my debit order date is for the end of the month thus causing extra payments on my account im so tired of this peoples **** i want to cancel my debit order and make cash payments but they not attending to my query at all #worst service provider ever #GATVOL