Worst service provider

Made an agreement with a consultant in Nov23 that they deduct my installment of R2086 and a further R886 because I had a bit extra that month. Did they not deduct both amounts twice from my acc. No accountability and one payment is not appearing on their side yet it shows on my bank statement. If been emailing since Dec and no one is assisting me. 3 more installments then im done with them. Never again. Consultants are rude and dismissive at that.