No delivery of the agreed products

I received a call from a Cell C about two weeks ago regarding a contract upgrade where I was offered a Blackberry Leap, I initially agreed to that particular upgrade after a bit of deliberation I changed my mind and opted for a Huawei package that included a P7 phone as well as a pocket Wi-Fi router I even verified with the consultant whether that's the package she was capturing, the very next day the phone arrived and there was no router, I then called Cell C to check as to when I could expect the pocket router and that's when Cell C flipped the script on me, I've been transferred from 1 consultant to another without joy (with the line dying on me at some point during a transfer), I've even sent Cell C an e-mail without reply. Needless to say this is the second time Cell C has reneged on an agreement between myself and them, the first time I took a contract with them I was promised data, sms as well as airtime and for the first couple of months before I had to complain there was no data and I ended up incurring costs I had no business incurring if Cell C had stuck to the agreement, do I also have to put up a banner/ billboard on a high-way for Cell C to stick to our agreements???