Flagship Merchant Services. Fraud Theft I had a merchant account from these thieves and they stole more that $10, 000 dollars from me in hidden fees . Holdbacks that they kept and wont give back and when I complained to them they went into my back account 3 separate times and took money without my permission. These people are slime and not to be trusted.. Now they won’t even talk to me. Flagship Merchant Services is a registered ISO/MSP of Wells Fargo Bank, N.A., Walnut Creek, CA read full review »