PayPal Service beneficial

Want to review the service of PayPal. I have ordered some goods from a international supplier and did payment through PayPal service on my credit card. They notify you with sms to enter a pin number whilst doing your transaction therefore you do not need to give your cvc number or card account number to international suppliers. I have accidently processed transaction twice and after reporting it to PayPal they ensure that you receive a case reference number and claim the amount back. Normally refund can take up to 2 weeks before it reflects in your bank account but I was surprised that it was paid back into my credit card within 2 days.