cancel any contract for Onairtv

I have requested on air to cancel all details that is been billed to my husbands account since last year my contact number is ********** 102 . We have a full dstv package of which showmax is included now onAir TV is billing my husband who is a 3rd party in the matter and is doing this ********, this is *****ing money from me and my husband as I have received the delivery information and I have not sign and don't even know what his connecter looks like. I have received queries and e-mails from ********** that the contract have been cancelled but this is still going on she denies sending me e -mails but i have all this as proof .