Payza Scammed me of hard earned 38 dollars and havent send prepaid card Nationwide

I withdrew 38$ from my payza account using my credit card. The transaction was completed but the money didnt show up in my bank. After 8-9 month of tickets and talking to customer support, i still havent got my money.I had previously loaded money into payza account and then withdrew that money to  check if it works and it did work. But after I tried to withdraw the money i earned online, it never reached my account.

Also, i ordered payza prepaid card. I placed the order, payed the fees, had my order verified, but the card was never shipped. I had to wait 4-8 weeks so i waited and the contacted them but they never gave me a clear answer as to where my prepaid card was. After many tickets and chat, they, out of the blue, said my card was shipped a few weeks back and I will receive it shortly. 8 more weeks passed still it hasnt arrived. Its been 5 months now. 

 Does any know if and how i cand send them a legal notice? Im from pakistan