APMEX your customer service sucks ; you do not honor credits , you do not answer emails , you do not return phone calls.
You can give them a call and discuss your transaction.
I have sold some that I have bought over the years and never had issue passing purity test.
I will say it again, APMEX is legit, there are many positive comments from members about APMEX that I approved here in my blog, just scroll down to read them.
2020 - APMEX launches new line of Silver bars - Pioneer Metals.