Wataniya stealing money by charging for Wireless

My mom told me about a new scheme from Wataniya using your phone to charge you for wireless internet. She has had her phone number since 2004 and recently every time she re-charged her phone using a phone card it was empty by the next day. After losing 15 KD she called  Wataniya and was asked what kind of phone she has, she told him she has an iPhone. So the new thing is Wataniya has some how made wireless accounts for customers and if you hook up to any wireless network your card is charged. She thinks it may be from using her wireless internet at home as she only turns on wireless when she's in her home. Has anyone else had this problem?