Optimum review: Charged for services not rendered

I inquired about bundling my internet, tv, and phone. Paid an activation fee. After speaking with my husband, we decided we did not want to change services. I called Optimum mobile and got transferred 5 different times trying to cancel my account. They never cancelled it and charged me the activation fee and monthly charge. We never unlocked our phones with AT & T and never used their service. I have been on the phone for 3 hours now with them. After 4 hours and 6 different people today trying to hard sell me, I still can't get them to give me a refund or cancel my account.