You can achieve a level 1 account which will allow you to withdraw up to 0.014 BTC from your account just by verifying your phone number. Once you have made an account, click on the accounts icon (the person icon) in the top menu as shown below: 

On the accounts page, click on the verifications tab in the left menu. 

Enter your mobile number in the area marked. You should start with the country code which is +27 for South Africa. The number should look like "+25 [Your Phone Number]". Click send.  

You will be sent a 6 digit code by test, put this into the SMS code section and click submit. A phone number can only be confirm by one account. 

After this you have reached level one and can now withdraw up to 0.014 BTC.