Misleading notices leads to a weary customer

I'm extremely dissapointed in receiving misleading emails about a discount that I'm eligible for.

I was so happy to receive an email that indicates that I'd save 50%, if that specific amount was settled within 7 days.

It didn't take me long to follow the request to indicate that I'd happily take their offer up, and that I needed an account number. I, then responded, and forgot to add my account number, which I then supp**** at that point.

No response to it, then prompted me to follow it up with calling the number given (this morning - 04 Dec) , and then I was forwarded to someone in collections where it was informed that I was sent the email in error.

Can you as the reader imagine this happening to you? I think that I have a pretty solid leg to stand on, as I was sent the incorrect information, and that this ought to be honored from your end.