Free phone advertised but not given

I recently moved house and transferred my telkom landline, for which Telkom has an offer where you get a free cordless phone if you transfer your line. Last week I went to the Centurion Mall Telkom to claim my phone. They verified my details and that I transferred my line and confirmed that I will get a free phone. Martin checked for stock and then said they are out of stock and he will speak to his manager to find out when they will get stock or which store has stock and he will phone me back the next day to let me know. It is a week since then and I have not heard anything from him. I tried calling the Telkom store several times but there is no answer. I even tried another telkom store and there is no answer. How am I supposed to get my phone when no one answers or cares to phone me back and let me know. <br> <br> I have transferred my line and I would like my free cordless phone as you have advertised and promised.