Old mutual money account

Hi. I purchased goods online on the 23rd of December using my old mutual money account card. The good couldn't be delivered so I had to be refunded. The money was refunded on the 27th of December. But to this date the money hasn't reflected on my money account. I tried communicating this with old mutual and even sending proofs of refunds etc. for the whole January month and all i get is that they are investigating and I must keep my reference number: MMAS ********** . I am not receiving any feed back at all. I don't know if I should continue trusting this account.