1 month ago I reported a debit order going off my account that was erroneous Was told I would be contacted in 2 working days- no contact

1 month ago I reported a debit order going off my account that was erroneous Was told I would be contacted in 2 working days- no contact. Yesterday the same debit order went off my account. Reference C-***8 Shocking I don’t know why we pay such exorbitant bank charges for terrible service