MTN incapable of providing e-sim but charging me for it

If you want an e-sim for an Apple Watch, please DO NOT go to MTN. I have been struggling for more than two months and they have now said they can’t do it due to internal problems and they cannot provide a date by which it will be working. Allegedly they broke something on the back end when they did a system upgrade. But the best is I have been paying for it! And even though I am paying for a service they cannot provide they won’t let me out of the contract. So they can commit breach of contract but they want to keep me to the contract?! So yeah, apparently I have to pay for the full 24 months but I have indication if they watch will ever work.