Bitstamp Users can deposit in Bitstamp through bank account transfers Credit cards etc.To perform any trade, Exchange or transfer from one Bitstamp to another every user has to transfer the amount from their main account to their trade account. if you are getting isuues above process contact Bitstamp Customer support number and Bitstamp Support number 1855-206-2326
More details - https://www.1800customerservicenumbers.com/cryptocurrency/bitstamp-phone-number/