usfastcash They have cost me over 500.00 dollars in NFS fees Internet

usfastcash is a fast way to send your bank account upside down----I have no luck getting in touch  with this company. I have sent them 10 emails telling them to stop trying to take money from my account. Each week they continue to try to debit my account--In the last 30 days they have cost me over 500 dollars in NSF fees---Is there anything I can do???? They do not return phone calls or even emails---they are relentless--but yet you still can not make contact with them---any suggestions on how to stop this from happening? I can't afford what they are doing to my checking account--I work two jobs 62 hours a week and all I have been doing is paying off the NSF that are adding up..ANY suggestions -----Tom