Royal Footcare Centre

I have been a customer of Royal Footcare for several years. They would measure me for Orthotics and when I received the orthotics I was able to choose a pair of shoes which was included in the sale. One was able to store a credit if one could not find a suitable pair of shoes so that you could come back and get a pair of shoes at a later date. I had this kind of credit from 2018 that I was going to use on Saturday, October 19, 2019. I had also bought a pair of orthotics in April 2019 and so I had credit from this purchase as well. Today (October 19,2019) when I tried to call them to inquire what their hours were on Saturday, I found out that they had closed--the phone number was no longer working and there is a posting on the internet of them possibly closing.
I was not notified of the closing so I have no idea when this happened. Apparently they have closed this business without informing their customers and without giving them an opportunity to receive the credit owing to them.
I am really frustrated and disappointed! I hope you can help me!