I've been ****** by Momentum Health

Momentum Health am very disappointed nd extremely angry with their services, my husband took a medical aid which was in November 2020 via the company, there were no response as a result we thought it was not approved, but on the 25 of February 2021 they deducted their money and the money was not in our agreement. So we cancelled on the 23rd via the company and we send an email to momentum on the 24th , they responded it's been cancelled but they continue with a debit.We call them asked for a refund ,the strange thing they don't have our information in their system and nobody is giving us anything straight. Am not happy with momentum and I want my money back..to me they rob me because the deal was R675 but when they deducted it's was R900 how come? Why now?Why we are not on their system?Why we never received any documentation from them?