What type of wax is this? Same thing happened to me with Zymöl Glasur, I contacted the company, and they sent me a new pot filled with wax - free. So, you may want to just contact whoever makes it and ask if you can buy the pot - never know what will happen.
Also, if your not looking for the same exact pot, just something that will do, go to the dollar store and buy SOMETHING that comes in a useable pot (OTC aisle). I did this - for me it was suppositories. Cleaned out the tub and transferred the wax.
New tub for a dollar.