Theft/Charging yet no service

so, my account was suspended three months ago (i accept responsibility) I make payment and realise that I have been charged for months wherein I was not receiving any service at all. Is that even legal. Feel like a consumer that went to purchase milk at Pic n Pay, paid for it but still had to drink black coffee because I did not get the milk. How is it that you could charge for this service.<br> <br> I want a refund or the amounts paid for the last 3 months credited to my account.