Advertising what they cannot offer

I went to Cell C in Cape Gate to apply for a new contract and was met with poor service. The deal they are advertising to the public is not even active on their system, so the contract could not be done.

The consultant assured me they have sent a mail to HQ and will call me the next day with an update. The following day there was just no response from him (Cape Gate consultant) I had to phone just to find out he is on leave...which if fine but then hand the deal over to someone who is on duty, poor expectation management, also to find out that the lady I spoke to the next day was the one who sent the mail i.a.w they did not do it the previous evening.

I am trying to get away from a current provider due to poor service just to be met with the same. How do you advertise something you cannot offer... I do have to add, the lady I spoke to the following day was great and very helpful but for the rest of the service, it needs some work.