MTN complicating matters

I got called from a company called Mobiles Plus, on behalf of mtn. I was on a call with a gentleman called Reece who was super helpful etc. We went through all my lines and we made adjustments to certain lines and even ordered two new devices. Then i received a fnb debit check mandate and it was to the value of R17000 a month, so obviously like any sane person, i declined as that amount was inaccurate. Yesterday a lady called to confirm the devices and the delivery address etc and that I will receive it in 2 to 5 days. Last night I got a sms saying your application has been cancelled. I called in this morning and was told that the application was cancelled and if I want to do it again I got to call 135 and speak to mtn online. I have been on hold for over 30mins now and I'm not getting any help. This is very strange and very frustrating. I was expecting a delivery with a new device only to be told it was cancelled.