Unknown subscriptions on account for years!!

My daughter sent an email regarding various subscriptions on my account. Went into the store and saw that there is a subscription for medinet which has been going onto my account for a substantial amount of time. I have no recollection of ever signing up for medinet. I emailed head office and asked for either supplying me with the recording for when I signed up or the signed documents. The response received was I should send an email to cancellations? What type of response is that? Here I am saying I never signed up and I'm being told to email cancellations. I'm again requesting the same on this platform. Failure to provide me with sufficient information showing that I indeed authorised a medinet subscription, I will refer it to the Ombudsman.