I just had a merchant account get 4 chargebacks in a month and the processor took every cent we processed on this merchant account the last 6 weeks (ACH'd it out) and is holding it for 6 mos. I have since had 2 more chargeback in the past 60 day. So a total of 6 chargebacks they took roughly 200X what has been charged back to hold for 6 months.
Nothing I can do... fun.