Overcharged? Return? Sort it out yourself!

On 25 Jan '15 I ordered Tablet covers & screen protectors. The value of the purchase (R873) was debited to my credit card that day. When the covers arrived they were the wrong size. On 7 Feb I requested a return. (Ref no: ***.) On 25 Feb I got my credit card statement and noted a further debit by Kalahari on 12 Feb to the value of R873. The status of the return still reflected as 'in progress' so I contacted Kalahari to follow up. I asked for the double charge to investigated and arrangements made for the return to be collected. On 26 Feb Jesse Raymond informed me the 3rd party seller had been contacted and urged to contact me. On 5 March after no response, I followed up again. Elzita Vlotman informed me I needed to contact the 3rd party and gave me the details. The refund policy however states \....the seller will be notified of your refund request. It's the seller's responsibility to contact you..."In the meantime NO response regarding the double charge has been forthcoming. On 7 March I contacted the 3rd party seller whose details I had been given. He informed me the tablet cover purchase was NOT done via him. Do I need to go and work at Kalahari to get this sorted out ?"""