Complaint Review: Peoples Credit First

I recieved a letter in mail stating mail in $49 rush get credit card for guaranteed limit of $5000, I was stupid and sent in the money. Got a little smarter and checked on the web, found out the company sucks, they are liars....never got card, 2 weeks after sending the info called bank, check hadnt been cashed yet so I was still able to cancel the check.....now I am in fear because they have my account information....bank told me to just keep a very close eye on my account to make sure no money is being withdrawm with my permission. So now i am freaking out because I am an idiot....if they do try to withdraw, i can get my money back and cancel all chances of them withdrawing again. Any advice from anyone out there on what to do now....the bank made it sound like just wait and see...I am hoping all I will be out is the $15 check cancellation charge..... julia hillman, Montana