Very frustrated!

I upgraded both my numbers on the 9th of April with Vodacom as I was due for one. I’ve never upgraded through the call centre before. It was my first time & the experience was seamless, or maybe that’s what I thought. My phone & device were delivered a few days after. Everything seemed fine as I had invoices stating iPhone 6 & Huawei router R218h. Closer towards the end of the month when I wanted to unpack, to my dismay, I have a Vodafone router which I never agreed on. My data was fine, 20G in total for R149 per month as agreed with Siphokazi. I called back & complained. I asked for Siphokazi but no one seems to know who that is, though records showed she did the initial request of my upgrades. Each time I called no one could put me through to her as she was maybe the ideal person to speak to. Anyway the device was collected. I was informed everything would be reversed which I found very frustrating. Now I see my bill for the phone is R422.38 & what happened to paying R299 per month? Data wise, my bill there is R328.60. Someone please tell me what on earth happened to the deals I agreed to? I’ve been checking my bills on the app & they don’t correspond to what I should be aware of. I really feel aggrieved with these deals. I need assistance please.