Beame debiting client accounts without consent !!!!

If i could give a zero start rating I would, I am absolutely shocked at how this company treat their clients. My debit order is supposed to go off on the 1st of every month (That is what I signed on my contract), these people decided in December 2021 to try to debit my account on the 20th (Mind you they already debited me on 01 Dec 2021 and are tryinng to debit me again on 20 Dec as opposed to 01 Jan 2022 because they think they know better). They try to debit my account without my consent and the debit order failed and thereafter sent me sms's and emails that i'm in arrears, when i contacted their debtors department to ask why my account was debited on the 20th and where is proof of consent they never rep**** to my emails, i ended up calling and the call center lady gave me attitude, she kept saying we sent you an sms early december to advise you we would be debiting you on the 20th, my response to her was did i give consent and she kept saying we advised you, these people are literally debiting peoples accounts without consent which is *******, i am now trying to contact the cancellation department because i'm fed up and their phones keep ringing unanswered, these people are a **** I will reverse every debit order that I can going forward because the cancellation department is intentionally not answering phone calls hoping people will eventually calm down and carry on.