No service delivery - still awaiting router delivery

I would like to express my discontent at Telkom Sales’ apparent incompetence in supplying me with a promised Wi-fi router within a reasonable period of time. On 21 April 2018, I made use of a Telkom special offer to upgrade my ADSL line to 4mb per second. Part of the 2 year agreement is a delivery of a free Wi-fi router. The initial delivery date was 2 May 2018 but to this day (18 May 2018) I have not yet received it despite having made several follow up calls and many promised delivery dates having passed. They mentioned on 8 May (on my 3rd follow up call), that they realised that the order for the router was never placed. Please help, as I am not a happy client at all.