Billing/account

I received an sms thanking me for sheet street purchase i then went to the store to ask what was that about , to my suprise i had bought R300 airtime of which i never did at the store they phone the head office she was very rude the consultant that answered and told me theres nothing they can do for me, she hang up on me that was on the 09/04/16 at around 15:00. Iam very dissapointed at the level of unprofessional at which the matter at hand was dealt i have lost interest onsheet street that shows they dont care about their customers at all, how does a consultant hang up on a customer with such a rude attitude