Customer Service Sucks and requesting a debit order even worse

Why is asking to have my premium deducted from the correct account so difficult? I notified O.M in advance for the change of banking details and still an incorrect account was debited. It's even more of a schlep speaking to the different customer care consultants who supposedly understand the frustration and nothing happens. Please if possible can a competent person call me as speaking to people like Amanda (09/05/2023 @12:52-12:54pm) is not very pleasant Madam Attitude.