No assistance since this, ever since

The following is still pending until today. The manager called and made a promise, nothing, I emailed the CEO's office, they rep**** but nothing still, I cant get hold of anyone in there. Below is the story------{I app**** for an add on contract on my account. The add on was for a ZTE M253 modem + 1tb hard drive for 259 pm. I went around looking for this deal on shops but no luck. At last the boulders branch promised to get it for me and they did. I had to wait for it to be ordered for a week or so. Finally on the 31st of December i collected it. To my Suprise the hard drive was not there and it seemed like the consultant snare not aware of it. They told me about e while stock lasts line but my understanding says for every modem there should be a hard drive. How come harddrives are finished and the modems not finished.. please assist me in getting my full package cause I took the deal knowing that at least I'm getting a hard drive also}