What do I do if a bike of mine sold, the buyer did not follow through?

the rules for pay pal are specific
you have to take the issue up with the seller and ask for a return and refund
you have to advise pay pal that there is a dispute with the seller
then you wait 30 days for a response from the seller after which you again contact pay pal as to the sellers response
from there it will be up to pay pal
it is all in the terms and conditions for using pay pal

Contact PayPal and bring this matter to their attention; they will resolve it for you.

Go to pay pal and set up an account. You can either put a deposit into that account from which pay pal will pay the bill or set it up using a visa card so that they debit the amount of the bill after you enter permission via a security number that you know on the card. Personally I use PayPal all the time as the money is guaranteed to be paid or recovered if the deal is not legal

call paypal
1-888-221-1161

Contact PayPal customer support. They are very helpful (unlike the old days before ebay bought them.)

You need to file a complaint with PayPal. Here's the link https://www.paypal.com/cgi-bin/webscr?cmd=p/gen/buyer-complaint-outside

just the e mail address of your paypal account. if using ebay you need to add your paypal account to ebay.

List the bike on Ebay to sell and tell the buyer what item number to look for. This way you can get paid so easy for it

You need to log in to your paypal account then click on transfer funds.

You can go into your Paypal account and add the other Yahoo email account to your Paypal account. Then you can claim the money sent to the other Yahoo account. You can have, I believe, up to 6 email accounts receiving money on one paypal acct.