Re: I do not use credit cards but I have a PayPal account to prepay Wi
Welcome to adwords community,
Payment option differ according to country to country, you can not pay your amount from paypal.
other option you can choose Bank Transfer.If you choose this option, you'll make AdWords payments by transferring funds from your bank account to Google's bank account. Your ads will typically begin running as soon as we receive and process your payment. This typically takes 5 to 10 business days, depending on your country and what bank you use.
For more information How do you make a bank transfer payment, Go with this link,
Hope it helps you