Website timeout during payment lots of money gone

I made an online payment using your webiste and during the payment the website timed out, I got a payment processed of 12k which is way over my bill and now I cant get my money back, I called support and they couldnt help me <br> <br> I asked somebody to cancel all data services I had and only provide me a line, this NEVER happened and iv been billed for data I cannot use at R600 a month, I urgently need some service because If I dont get my money back and my package adjusted il have no option but to go to my lawyers