Pay back the money!

After 2 months of ping pong emails between CellC and Nashua Mobile/Altech Autopage I'm still no closer to receiving my money! I mistakenly paid Cell C R400 instead of Altech when Nashua went belly up. CellC say they paid Nashua. Nashua say they did not receive it!? Why must I use all my resources to get my money back? The solution is simple, I gave CellC the money. CellC you should return it! If you have lost it then you must find it, it is not my responsibility! Moses, you were a star in the beginning, but now you do not reply to my emails. This is easy to solve bru!