Poor service

I received my new cell phone in April 2019, in there promotional booklet the advertised free goods of R1590, I renewed (upgraded) my cell phone contract via the telephone and I asked the sales consultant if I will still receive the goods and he said yes. I did not receive anything. I have send numerous emails, I was contacted by the sales manager of Hi Sense and I was told that the advertised goods where out of stock but he will send them to me. It is now 13 months in to my contract and still nothing. What rather happened was there was a price increase in my contract From 199.00(this was the advertised special) to R209.00 . The sales manager of Hi Sense did not keep his word and Mtn ignored all my emails. I switched from Vodacom to Mtn but this seems to be a great mistake on my part. If anybody just came back to me that would have been the end of it but no one did. I emailed them on the following dates and all I got was automated replies asking detail witch I rep**** to but no feedback. 04/05/2019 25/05/2019 20/06/2019 10/07/2019 19/12/2019 And that is besides a lot of phone calls to there customer care department.