Over a month and still waiting on my refund

I purchased a phone online and it got delivered on time. It worked for one month then got blocked by all networks as if it was a ****** phone... Kalahari arranged for it to be collected on the 9th Feb 2015 and said it would take 14 working days to assess and a refund or replacement would be done. After waiting 14 days I phone the call centre and they dont have my phone... they are waiting for a waybill from fedex and will get back to me... Two days later Icall same story they waiting on Fedex.. so I call Fedex myself and they say they will check where the paparcel is.. after 1 day I call them back and they have located it but are waiting for an RMA number which I had but they wantIit from Kalahari and cannot take it from me... I call Kalahari and tell the the story and complain about having to call and no feed back then they say there will be a refund in 3 working days . After 3 days I call back then they tell me to go online to request the money to go into my bank account which I do and one week later still nothing.. I call the call centre again and get gold to email a bank statement to them which I do and still nothing.. I call agai today and I get told that they investigating B