https://international.schwab.com/contact-us
There is no email for Non-customers, you can to fill out the online form or call them.
once you become customer, they have toll free number for every client for each country separate. Schwab has best industry customer service .
Your questions:
- No, if you like Das trader, you should go with Ameritrade (merging with schwab) or Interactive Brokers. Both Brokers support trading from Das trader.
- No , free for most basic data requirements, i never have to pay anything
-With OTC, depends on how liquid is OTC and market cap of the stock
-Hotkeys is better than ETrade and order types , does most basic things, However there is No hot Buttons that you get with Das Trader.
- I have almost 60 OTC stocks in my portfolio and all with schwab, i never experienced any issue, except with some OTC, you can't place order in Pre-market
Where in Asia do you live ?