I guess some miles are past expiry? If so, ask the right question. There are refunds of redemption, just 0 miles refunded. ask why 0.

All 760,000 points were transferred over to KF at the exact same time in January. The 4 award tickets from SIN to SFO were all on one itinerary, but somehow they were able to separate out the top two passengers and not refund my points. They said on the phone that they're going to escalate it up and give me a call back in a few days. Lets hope this gets resolved.

I guess I have "only" been waiting for 2+ months now for two redemption flights to be refunded, so nowhere near as long as your experience.

Frustrating nonetheless, especially considering one booking shouldn't even have been cancelled as 2nd segment of the one-way ticket is still​​​​ scheduled to operate as planned in Oct. I asked for expedited mileage refund for that cancellation that was messed up by SQ so I could rebook and followed up twice, nada, zip, nothing, silence. One also has to regurgitate the whole story again and then when agent finally grasps what is to be done one gets the same assurances that don't pan out. Alamak. :)

expired miles will be extended. So no issue in that.

Update:

SIA has finally manually redeposited 180,000 miles back to my account after multiple phone calls with them.

Well, after waiting about 3 months and triggering a follow up via the SQ Support form an agent reached out and settled the refund for both tickets. Miles back same day than the call and first set of tax and fees refunds hit the credit card two days later.

Not bad overall, one just needs to keep track of things.

I have an award booking in Suites in November (SIN-LON). There has been an equipment change and there is no longer F on the flight. I was about to cancel this flight anyway, since the trip isn't happening, but now I can't do anything with the booking on the website. Can I use the refund form, or is that only for canceled flights and not downgrades? Will I have to call?

Add another datapoint to the list:
Booked ticket for business trip in March. Trip cancelled for obvious reason. I thought I'll just leave the ticket as open since SQ is offering incentive for rebooking later.
However, SQ has not increased their flights/routes and has no indication to do so in the next few months, plus SIN is still largely closed for transit, I decided to ask for refund.
Filled out the form on Aug 17, a few back and forth email and the refund process started Aug 21. The refund was deposited into my credit card on Aug 26.

Overall, really happy with the process and time to resolution.

but they still have not deal with my refund requested in May. I have not chase them yet. Maybe I should do so

Use the web form for COVID-19 related queries, provide the PNR reference and what action you want to be taken. I also had called two plus months ago and asked for refund and nothing happened, but after I triggered the form actions started within 7-10 days. YMMV.

i submitted the form in May. Received an automated reply. That all. Maybe I should send in the form again.

Flights for family to Bali for November, were cancelled by SQ last week. Filled out refund request on website, and got a reply saying expect your refund in 4-6 weeks. Pleasantly surprised to see that refund turned up today - within one week.

so I send in using the form again. (Under inquiry). Someone reply me asking me to give them more detail. (Obviously it is stupid question because the email n booking reference are all linked to my KF account).

So I just give them what they want. They reply will check n get back. But still no confirmation since 2nd sept.

4 months after I submit the request, finally I receive a call from SQ today. They said that they are refunding me only 2500 miles per person for a SIN-BKK flight (J class). This is actually part of DPS-SIN (stopover)-BKK.

DPS-SIN have been flown. So I tell them this is not acceptable unless they refund my stopover fees as well. They will check n get back. My process is actually process by the Bali office. Guess different office have different way of calculation.

Yikes, that's not the level of service SQ should be proud of