You can't buy miles by cancelling an award any more oh yes you can again

Cancelling an Avianca Lifemiles award

update - Apparently "Google-talk" can be useful as it can transmit the credit-card number faultlessly.

1. This will take 20-30 minutes and costs $50
2. You have to pay the $50 up front and will need to have your credit card handy
3. You will need a PIN number for the call center. You set up the PIN online by changing your "information and preferences". Note that this has 3 pages but you only need to change the "Manage the Basics" page and hit "Save". The progress-bar at the top never seems to reach 100% but it doesn't matter. There are two places to press "Save and continue" when you give the PIN. The top button doesn't work. You have to click on the one on the bottom of the screen
4. Call the USA reservations number preferably during business hours +1 800 284 2622
5. Key 2 for English (or 1 for Spanish), 3 for Lifemiles/Corporate, then 1 for Lifemiles
6. If you have got a noisy phone line, hang up and go back to step 4. It is possible to get a good line even from overseas.
7. With luck, someone coherent will answer. If not, don't waste your time, HUACA
8. Give them the PNR to be cancelled
9. [not any more] You will get a sales pitch encouraging you to change the flight to another date which would cost $150, rather than cancel. Insist on cancelling.
10. You will be asked "do you have a PIN". say yes. You will be put on hold
11. You will be connected to an automated system to key in your PIN. Don't press # afterwards. [Sometimes they dont ask for the PIN any more]
12. You will be asked to pay the $50 via an automated system. You'll be asked for your CC number, then you must repeat it. Don't press # afterwards. Then the expiry month, then year, then the id number. Be ready to rattle through the keys as any hesitation causes the system to think you've finished. So, typically you will need 2-3 attempts. [The operator listens in on the automated process and helps you along if you don’t key in the right numbers]
13. You will be put on hold for 5-10 minutes while the card is checked. It may fail the first time, for no reason. Go back to step 12.
14. Once the CC is confirmed the operator will ask you for the full billing address, then your name as it appears on the card, then the name of the bank which issued the card.
15. You will be put on hold for 5-10 minutes
16. The operator will confirm the cancellation, or rather confirm it will be put in the queue for manual cancellation.
17. After 24 hours or so, you should receive an E Mail receipt for the $50 (could be in Spanish)
18. Miles will be refunded within 2-3 days, as if you had paid using the maximum miles with no cash to refund all the cash and the miles to what you had before making the booking. The miles sometimes reappear immediately. [Most often, the miles are available within 24 hours.]
19. The taxes - fairly modest - will be refunded in full since you already paid the cancellation fee up front. The refund should hit the CC within a week or so. No refund for the $25 booking fee.
20. AFAIK the cash will be refunded to the original card not the one you just gave them.

[Thanks to SMK77 for the updates]