MTN stealing airtime

[goldenarrow]

Hi guys
My sister is on MTN prepaid. Every time she buys airtime MTN takes R10 off automatically.

For example: buys R50 and they take R10. So she is left with R40. Why is this happening?

Any help much appreciated.

 

[ginggs]

Losing airtime? – WASPA

waspa.org.za