Why promise what you cannot deliver?

Standard bank called to upgrade my account to Prestige, because my monthly allowance is more than 25k, I explained that it is not a salary but an allowance from my husband, I was told I still quslify. The call took such a long time as I needed to listentl to some audios. A card was to be delivered to my house. After 2 days, I noticed through truecaller that I missed their call. I called back to check if they are delivering the card. Guess what? I was told that nothing of my card upgrade is on the system. We had to go through that loooong process again. Towards the end the lady tells me I don't qualify because it's an allowance and not a salary. 1) I did not apply for this, they reached out to me. 2) I indicated from the beginning that it's an allowance and not a salary. 3) If the 1st guy mistakenly reached out to me when he was not supposed to, why not call and let me know it was their mistake rather than wasting my time on something I never asked for?