MBD staff needs training on their systems and procedures

After receiving feedback from them regarding incorrect billing on my MTN account early January 2018, I received a letter of demand please see below; MR STEVENS Your ref: ********** ********** 83 Our ref: ********** ********** 83 Date: 16 January 2018 Direct Tel: (011) ********** Direct Fax: (011) ********** We act on behalf of MTN SERVICE PROVIDER (PTY) LTD. We noticed that we have not received a payment on the aforementioned account within the last 30 (THIRTY) days. The last payment we received was R 300.00 on 15 December 2017. The balance for your MTN SERVICE PROVIDER (PTY) LTD account is R 5631.37 on 16 January 2018. Please make an immediate payment of at least R 921.22 by 27 January 2018 to avoid legal action being instituted against you. It seems that no one will take ownership to correct the fault on my account, I was advised that my debit date was corrected but still I am troubled with silly sms's and now this letter, I cant deal anymore. Today I was advised that I will have to go into the bank to make payment and only then will their debit be activated again.