Unhappy customer

Rewardsco, is very dishonest, I did a whole contract application on the 26th of Jan and was approved and I was told my order will be delivered within the period of 3 to7 days .I waited and after 7 days there was nothing,no communication whatsoever.I called in to do a follow up I was told I'm still within a 10 days waiting period I'll get a call to arrange delivery within that 10 days , still after 10 days there was nothing,I did a follow up again and was told there is no stock on the phone I want, which initially I wanted a white colour, they told me it is out of stock only midnight black is available and I said they can send that colour but today I'm being told it is not available. At this point I feel like I'm being ****med as I've accepted a debit order mandate, it feels like they gonna start deducting money before I could even receive my phone which at this point I'm not even sure if I'll ever receive it I'm really disappointed and dissatisfied by rewardsco service.