3 weeks and waiting

On the 18th July I bought a set of Tissoli pots that were on special and I was supposed to get a free set of knifes when i asked about the knifes I was told they are were out of stock and they will call when they have stock on the 25th July I called to find out if they had stock and they told not yet yet and they will call once they have stock. To date I havent recieved the knifes or a call to atleast explain to me that they are still waiting for stock I find very unprofessional as they have both my landline and cellphone number. I again decided to all them myself today and the lady put me through to the pots department i was holding for about 5 min the phone was just ringing, Im wasting my airtime to follow up on something thats paid for