Shocked!!!

Received an email stating the we need to update our company details attached, the attached document its a registration form . Got my boss's signature on the fine print says that you continue paying annually for ad unless you cancel? weeks later Im receiving calls and emails the we owe the ads space suddenly bill is about 20k .threatened with action if we do not pay, a lady by the name of Tash Andrews keeps calling saying we need to pay out. who signed for the designed AD in the first place, Who gave a go ahead Now she says she will send an invoice that we only need to pay a 50% cancellation fee for an ad that was never approved by us to go in print and we are told that there were delays because we took time responding to their emails. This is +-R20k for nothing. she keeps phoning threatening with legal action telling us that we will pay the cancellation fee. She does not even give you a chance to speak up . I am disgusted that a company professes to be so professional customer orientated as I . Shocking!