Unauthorised debit ordeer query not resolved for almost a year

Premier Banking is generally LESS effective than normal banking, so why pay the extra fees? I had an authorised debit order overlooked that went off for almost two years. I have emailed the debit order query mailbox, and spoke to several "premier banking" consultants, with ABSOLUTELY no response or assistance in this regard. I even had to go investigate the matter myself since the company who debited amounts is "confidential".. REALLY! This has been going on for almost a year, and I keep following up with no feedback. Disgraceful!