Lies as marketing

I received an sms from MTN with a great offer, then bought airtime so that I can purchase the offer only to find that it's all a lie. One of their service champions told me that on the phone when I called to enquire about the offer. She literally said it's a lie they use to market the business. I have never been so disappointed 😞 especially after buying airtime hoping that I will save money with the double bundle offer.