What if I use their phone system to pay?
How do you plan to pay with their phone system?
I'm going to use my credit card to pay
It's important to pay your debts and using a phone system is the fastest and safest way to do so. Make sure you do it in a secure way so that your credits card information doesn't get compromised.
I bet it's not that safe. I am going to pay with cash.
Well it is fine as long as you are paying, use whatever method you would like. Making sure people get what they're owed is the only important part.