Not geared to assist customers

I saw Hi-Fi Corp has Tech on Contract deals, so i went in to upgrade my MTN contract, when arriving in the store, I saw what was advertised and asked for assistance, we went to the counter, where I was then told they can not do MTN and only Telkom & Vodacom as they do not have login details for MTN yet and they might get it in a weeks time.

Then my question is how can you advertise something and you are not geared up to assist customers who planned their day around getting to you store at Mall@Carival, first you have to wait at robots that do not work then when you are finally in the mall, to just get told that you are waiting for login details and that you just finished training and it will take a week.

So please explain to me how can you advertise the Tech on Contract - MTN deals when you just cant assist the customer and causing frustration.?

Please explain I will seriously be taking my business else where and inform MTN that I will no longer be upgrading with them, because one of there partners can not assist with the upgrade as advertised.