Terrible Call Centre Service

I would like to launch a formal complaint. In June 2019, I changed my debit order banking details from Standard Bank to FNB. I contacted Multichoice call Centre in June and I was told that I need to fill in a 3rd Party Authority form because the DSTV account belongs to my mom. I did so and sent back the forms to Nomsa Mbatha on the10th June but the banking details were never changed. The debit went of the old Standard Bank Account.

On the 11th July 2019, I called again and spoke to Thando Kubashe about the same issue. I sent through the form and ID copy but again it was never changed.

On the 8th August, I called again regarding the same issue. I spoke to Saphokazi Mnisi and sent through the form and ID copy. She then requested a proof of banking details which i also submitted but the debit order still went off the Standard Bank account.

Today, I called again and spoke to a certain gentleman who told me that they actually can not change account details on the system and that I need to visit a multichoice branch because they are struggling.