how can you cheat for airtime really I want to know I'm tired of spending to much money on air time

Get registered via SMS as a Customer. You can ask any other Customer to register you or call 0861 77 88 00 for assistance.
Alternatively, you can register yourself by sending the following SMS to 083 230 1111:
JOIN NOW FIRSTNAME SURNAME
Make any value deposit for Airtime (cash or EFT only) at First National Bank, Tygerberg, Branch code is 201410. Account name is EZ Airtime, account number is 62085553537. Cash Deposit fees apply and will be deducted
IMPORTANT: Write your cell number on the deposit slip as the REFERENCE number. Your Airtime account will be credited immediately. Any Airtime credit is available 24/7 for downloading vouchers.
If you do not get an SMS notification of your deposit before leaving the bank, then phone our Call Centre on 0861 77 88 00 immediately. Keep your deposit slip handy. If you include your cell number as reference number, you will not need to fax proof of payment.