Upgrade gone totally wrong

My son loaded recurring data against my vodacom number. I got a shock when my debit order that went off was over R440 when I should be paying R129 a month. I phoned on Sunday evening 31 May 2020 to rectify this situation and advised that it should be canceled and that I would like to cancel the contract altogether. The consultant I spoke to then persuaded me to do an upgrade and assured me that I will only be paying R92 going forward and that I will receive R65 airtime and 10gigs of data a month. To my surprise when I confirm this morning this was not done and still over R495 to be debited from my account. I would like to cancel the upgrade altogether and now no one can help. I want those call pulled as I will not be liable for this ridiculous debit order amount. I phoned yesterday and and today and spoke to Thespiso as well as Angela Mothusang and it seems the upgrade Consultant **** to me. I have not even received a quote for the R92. If R495 debit orders are going to continue going off from my account please note that this is ***** as I did not agree to it. I want this contract upgrade canceled with immediate effect without any penalties as the upgrade was only done on Sunday 31 May 2020 and I am well within my right to cancel. The last debit order should be end of June 2020. The name of the upgrade consultant is Mothusimang Sapele. Why can't anyone help. I have exhausted calling now and want this resolved today.