Worst experience ever

What a very frustrating experience with MTN. I regret why I even choose to get a contract from them , last week on the 14th I app**** for an online iphone 13 contract which costs about R399 the following day a lady from mtn called me and took me through the terms and conditions which I agreed to take the contract. Today a driver contacted me as he was on his way with the parcel only to find that it's a sim card only no mobile phone , I tried to reach out to them in all platforms, whatsapp, customer care. Called 135 I did everything untill I decided to give them a straight call. I got hold of one of their agents and he told me on their system it shows sim only I mean how can I apply for a sim only at a cost of 400, this is the worst service provider I don't wanna lie they don't even respond to the emails , I will cancel the debit on my bank