Was wondering if recurring subscrition is a standard on all paysites?

[BDG]

I want to register on this site:
Premium Link Upgrade

But I read in the terms of service that the membership is recurring, this means they will keep billing me month after month after I "cancel my membership"
But to cancel membership they put links to 3x sites. Here is the quote.

My questions are:
Are these sites legit?
Is my account information safe to give them?
And how much problems am I going to need to go through in order to cancel membership?

I apologize if my concerns are a bit noobish, but this is first time I am doing this so just wanted to consult you guys about the whole thing.

How can I cancel my membership?
Solution The easiest way to cancel your membership is to use the cancel form directly located below.


Paycom/Epoch Primary Credit Card companies
Cancel form Premium Link Upgrade

CCBIILL Secondary Credit Card companies
Cancel form Premium Link Upgrade

Online Check Processor
Cancel form Premium Link Upgrade

Note: After you've cancelled, you’ll still have access to the website for the entire time you paid for until the billing cycle ends. Cancelling your account simply stops the reoccurence of future charges.
The access is not cancelled immediately upon cancellation. Website access will be denied only after your paid access period has ended.

If you have trouble cancelling contact us using the contact us link below, providing as much information as possible so we can locate your membership.

We hope that you enjoyed the site
Support team