Airtime not reflecting after 4 days

My Name is Mr Manogran veeran. I used to be on virgin mobile contract. my contract expired in February this year and I decided to port my number over to cell c. on Sunday I followed all instructions correctly regardind porting of numbers which is : I bought a new cell c starter pack, I ricad the starter pack. I sms the rica serial number from the number I wanted to port. the next instruction was to wait until the old sim stopped working and to then put in the new sim. I was able to receive calls on the new sim card but with the old number. on the 4/04/2016 I then proceeded to recharge twice with R50 rand airtime and I received a cell c confirmation of the balance being R100. when I dialled the balance check the balance reflected was 0.00. I called Cell c and the customer services lady told me there was a problem with internet recharges and that it would be sorted within 24 hours. I waited until 6/04/2016 and called cell c again. I spoke to a lady by the name of Anita and she assured me that the internet problems were sorted. The airtime is still not reflecting despite the confirmation from cell c. no call back despite them promising to. I am appaled by their service, bad attitude