Broken complains process and even worse service

Where do you start with poor service stretching over 3 months? Let's start at the beginning. June 2021 my payment date change to the 16th of every month. I informed every department in SB , The house loans team was amazing , Revolving credit and Credit card dept. was quick . The VAF department not so much. When the 16th came everyone deducted except the VAF guys , Phoned them , they promise to fix it , nothing happens. Phone them 3 more times , Still nothing. Eventually talked to someone that say they will deduct double the next 16th. When the time came ,only 1 deduction, Another 6 phone calls and no action. I send emails and call every couple of days over the next 2 weeks , lots of promise , no action. Suddenly a Lawyer call and tell me with glee that I am now an delinquent payer for being 28 days in arrears and are not allowed to speak to SB anymore. Write a complaint to SB on the customer resolution process. ZERO RESPONSE. Phone their Resolution response team , Gentlemen take my concern and Promise to phone back within a day or 2. I call them 5 days later , nobody have done anything about it , the reference number is open but nothing. Push them to deduct the money immediately of my account to bring me up to date , get told they can't because I am in arears , he did however put through 1 and a half payments after me loosing my patience. Not sure how it was then suddenly possible?. Today I get called again by the collections Dept. and told I am a bad payer and that after 23 phone calls , 2 complaints and 4 emails that nobody know anything about me. Talked about being just a number?? I have already moved the company I worked for accounts to FNB purely because of this experience and can not wait to move my accounts as soon as possible. Thank you Standard Bank for showing your true colours after 20 years of being loyal to you.