Vodacom fibre cancellation

We got fibre at the end of December in the Krugersdorp area. Vodacom was doing sales on the corner of nearly each road. I signed up for a 20MB UNCAPPED fibre optic line and was told that the fibre connection would be done in January. The next day Vodacom delivered a fibre modem PLUS and LTE ****le and SIM card. I phoned them to find out why the extra stuff. I was then told that the fibre installation would only happen in March 2019, and that I should use the LTE in the interim. I was also then informed that the LTE has a 100GB limit. We use a 100GB in less than a week. I never used the LTE and continued using my existing ISP, waiting for the fibre install process to begin. I phoned vodacom again 28-March-2019 asking what is going on because nothing was happening. I was then informed that they (vodacom) have NO idea when the fibre will be ready. I then asked how I can cancel the whole process. I was given instruction to email my Sales Order number to ********** ********** giving instruction to cancel. (this was done 28-March-2019) On the 10th of April 2019 I got an email from vodacom confirming they received my cancellation order. They added a bill for the contractor who "installed the fibre". I then rep**** to them that there "IS NO FIBRE. NOBODY INSTALLED ANYTHING!" Why must I pay for absolutely NO service delivery?? Then, this morning (16-April-2019) somebody from vodacom phoned again asking about the progress on my Sales Order. I told her I cancelled it. Then the next moment I get an email again saying vodacom is preparing a delivery for me (again another modem and LTE ****le and SIM card)

Are these people so stupid?????

Do they not know what the word CANCEL means????

And there is no reply email that you can use to try and contact them, and the call center is a Comedy Central Joke.