Misleading information for my new contract from agents and supervisors

An mtn agent called me from the sales department offering me a contract for j7 prime including 2 gig monthly and R110 airtime. She advised my first debit order will go 20 november hence we already in october 2017. I accepted my phone arrived on the 10th of October, activated. To my surprise i recieved sms on the 16 october that they will debit R491 on the 20th october. I called spoke to an agent by the name of Andiswa Ndlovu she advised me mtn made a mistake and they should start debiting me on the 20th november she called her supervisor and her supervisor told me same thing that mtn made a mistake. I asked them is it ok if i move my funds to another account to avoid them debiting unnessecarily? They both confirmed yes i should do so which i did. Then i called mtn again on the 28th october i spoke to Nadia supervisor from durban call centre she said my services will be barred because of unpaid debit. I explained to her that i was advised that first debit would be 20 november the only thing she said that was wrong my services will be barred anyway. Your service MTN is poor and both your agents and supervisors dont know what they are doing