Singles 50 dating site are taking money from accounts without authorisation

I just want to warn people not to sign up for Singles 50 dating site. They advertise on Facebook. Firstly, their rate is per week not per month like all other saites, so you think you are signing up for R96 per month but it ends up being per week. Then even when you email the company telling them you want to cancel, you need to send a signed letter straight away. I specifically said in my letter that they did not have authority to take any more money from my account. The next day, they deducted R1,999! Please do not give your card details to them- they will continue to take money. I have cancelled my card. Besides that the only men that contacted me turned out to be con artists, who were still on the site even though they had been reported already!