Discovery take your money and never respond

I am so frustrated that Discovery does not return or action any emails. They hardly have any email options to contact them. They always push for their customers to call them. I am out of the country and calling is difficult. I have been a loyal member for many years. I am out of the country and needed to pay out of my pocket for medical treatment. I sent my claim to their claim email address and the auto response said someone will respond in 2-3 business days. it has been more than 10 days and no one has assisted me. I also cancelled a month ago and no one has responded as yet. I am most probably going to be debited again this month which I was trying to avoid. There is more than enough money in my savings benefit to cover my claim, yet I can't access it and have to pay their monthly membership.

Why do you never respond to your customers?? Your tardy customer service is costing me money.