Terrible pathethic bad everything of telkom

So I had to upgrade my cell phone contract at telkom, I go to telkom on the 24 June 2020 to go do the upgrade, the consultant just say sign here and sign here and says that I do know I will be charged pro rata data charges because it's not the end of the month yet I say I know that, but what he doesn't say is that I will need to pay the full device fee for the phonw because it's 6 days before the end of the month, my bill comes for July and it's almost R3000, yet they claim all charges are correct even if the consultant never told me that, I have emailed telkom, called in, the call center manager is as arrogant as can be, he just wants to say his say and even thou they told me numerous times that they did not say that pro rata data charges are part of device fees they still think I'm. In the wrong,

So Sibusiso Maphumulo the call center agent tells me he will request a call back from his manager as I wanted to escalate the matter, he says he has done so and I ask him how does he know his manager will call. Me back, he says that he had emailed his manager and his Manger responded, I then ask him to send me a email as proof that he asked his managed for a call back and he said he cannot do that. I then ask him again to do so and he says he will put me on hold, I'v been on hold for about 20 minutes and I received a email with the time stamp of the 20 minutes I've been on hold as he didn't send the email to his manager the time I asked and only done so after I asked numerous time, I actually had to force for things to happen as I said that I will cancel my debit order for telkom to debit my account and I'm still gonna do so because no one's getting back to me still

If there's anyone that can assist me, I will definitely be willing to lay charges and bring an attorney into this matter