Price advertised not the one I paid

Good day, I have written to Ackerman's customer care over 4 days ago and have not received any response. I am so disappointed and would like the matter resolved, I purchase two items which had a stick on them to show a price of R129.99 per set but instead I was charged R79.95 each. I believe this is not good practice, which is treating the consumer unfairly. I spoke to the staff and they told me they can't help me because this will count as a loose to them. Please can you help get this resolved.