Airtime gone in 9 days

<p>Im currently on a vodacom topup contract, my R500 airime was gone in 9 days!!!!</p> <p>THis is ridiculous as this normally last around 25 - 29 days</p> <p>I have been to 3 vodacom shops to upgrade my contract as its due for renewal and then there is no stock of the phone that i request i get sent to another vodacom shop only for them to be offline this has been going on for the last 3 - 4 months</p>