MTN disappointing again

So to start this off, this is my second Hellopeter review. My first review was on the 2nd of Feb 2018, to which MTN rep**** with an apology on 3rd Feb 2018 (Thank you MTN). Thereafter I rep**** on their comment (which they didn't read or reply to 08 Feb 2018). But just a quick recap, after I phoned the MTN call centre (02 Feb 2018) to do the upgrade VIA them, I was assured by the very nice gentleman on the other end of the phone that the phones will arrive the following week (05 Feb - 09 Feb 2018) which I was very relieved about as this has been 2 weeks since I ordered my phones from the shop and got very poor service from them. So last week by Thursday, I haven't yet received a call from the couriers that will be delivering the phones to arrange for a drop off time, so I asked my husband to follow up with MTN. He got told by the operator that NO request has been logged on the system with regards to a contract update and the phones has obviously not been sent yet. WOW!!!!!!! So after a very heated conversation (Can you blame us since this is exactly the FOURTH time that we have to go through this process!!!) the new operator assured us that by latest Monday 12 Feb 2018 we will have our phones. Saturday get a call from the courier service to confirm the address for delivery that they will make on Tuesday 13 Feb 2018. I can honestly say that I am disappointed in the way that MTN is handling the situation. I pay my bill every month. My contract fees were raised during my contract payment and I paid the extra money with no complaint. I took out a even more expensive contract, raising my original contract fee with R300. So is this the service that I should get used to? How does MTN treat the customers that skip monthly payments?