Dissatisfied

I've been trying since 15 Dec 2018 to cancel my Get More services on one of my contracts. The related contract number is my husband's phone, therefore you won't be able to speak to me directly when you want to contact me to discuss this situation. I've brought this matter to the Get More department's attention via their Online Chat, but no one has contacted me since. I provided my personal contact number and work contact number, but no response. Please I'd like to cancel my subscription. Thank you. W Kruger