Starting off with bad service

I signed up for the R899 Explora deal and requested that the R149 once off debit order fee be deducted 29/03/2016. On 30/03/2016 I received an sms that the payment was successful and that the decoder will be delivered within 2-3 days. I contacted an DSTV approved installer and made arrangements for Saturday (02/04/2016) for the installation. Today is the 3rd day, so I should have received it by now. I called the customer care now and was told that nothing has been done on this order and I should wait and see when it gets delivered. They cannot give me a contact number who I can speak to regarding the delivery. When I asked to speak to the supervisor, she contacted the relevant people and they said I should receive it sometime next week, but they cannot tell me when. I must just wait. I think this is truly unacceptable. If I was told to receive it within 2-3 days, I expect to receive it within 2-3 days. And if I query, I expect answers and dates. I don't want to hear that they don't know when it will be delivered. NOT IMPRESSED at all.