Changing from conventional to pre paid meter

In January this year I changed over to pre-paid electricity. In February I pay the last billing invoice and was requested to sent my banking details with request for my deposit. The person then told me that it will take two months for Eskom to pay back the deposit. Currently this is the third month going into the fourth and still no pay back. <br> <br> Everytime I phone the answer is plain that they are still processing the payment. How long still????