Telkom - Upgrades customers without consent -

Telkom, for 7 months you invoice me and debit my account as per invoice, you magically decide to Invoice me for October R3750,00 for a service I never signed up for! I phone and lodge a complaint that immediately gets rejected by the most rudest arrogant person I have ever spoken to! And considering you record your calls I am requesting you pull up every conversation I have had with your employees! I phone and speak to accounts again who lodge a second complaint again which to my surprise got rejected without anyone even bothering to contact me! I have phoned your sales department to find out who upgraded me to a line I never requested for, who i got a reference number for my last call to them! I will not be paying for a service I did not subscribe too! I never upgraded to any fiber contract , you decided to upgraded me! And I certainly will not be paying for it! So I suggest someone at a higher level contacts me, who has authority to request all my telephone conversations as I will not accept Telkom *****ing my money. There is no conversation or contract from me to upgrade of any sort!