payment

I emailed them a couple days ago and didn’t hear back. I was wondering how long it takes them to get back to me I had a question about the payment options. Do they take cash by mail ?

I'm having a difficult time getting ahold of anybody at domestic supply. Can a rep answer my question on how to make payment online? I emailed them 2 days ago and I still haven't gotten a response. What are the payment options that they offer and why is my payment not going through?