Poor Customer Service & False Advertising

Look. I LOVE Afro's food and their in-person customer service, however... I tried to speak to TWO consultants via the chatline about a coupon I received via SMS on Tuesday the 4th of January which was showing an error code of 'coupon invalid' when I tried to use it on my first app order.

The first consultant, Lettrisha Naidoo, ended the chat by saying the promotion ended on the 31st of December - that's it. She just ended the chat.

The second consultant, Shanyn Naidoo, said the same thing and just ended the chat before I could even reply.

Why did I get an SMS on the 4th of January if the promotion ended on the 31st of December - this is false advertising - and why have a promotion called MY FIRST if I can't use it on MY FIRST order and why do the consultants get to just end chats like that? I HATE BAD CUSTOMER SERVICE... Makes me never want to support Afro's again.