Sage *****ing Money

I renewed my license with Sage in April this year. The lady gave me the wrong amount Which I paid and then they have transfer the money out of my account into somebody Else`s account. They cannot as yet give an answer as to who gave permission for the transfer. I have paid R 12 027.50 while my account is only R 6 147.90. They owe me the difference but they keep on sending me an account for the R6 147.90. They also