Here is the deal. I will hold a little lesson on getting caught shoplifting.
There are two parts to shoplifting - Criminal/Civil.
Criminal
Shoplifting is a crime. You can go to jail. The easiest way to do this is for the store to call the police, the police show up, run you in the system, write a police report and either charge you themselves, or have the store go to the commissioner to take out charges for theft on you.
If the police charge you, you will get a piece of paper from them with your court date and the offense you were charged with.
If the store has to go to the commissioner to charge you, you will receive a letter in the mail (at the address you provided them) that will detail what you are charged with and the steps you have to follow. You will most likely have to show up on your own accord to the commissioner, they process you and give you your charging documents.
Now it is up to you to get a lawyer or figure a way to defend yourself against the charges.
Just because the police do or do not show up has no bearing on whether or not you can or will be charged.Sometime cops show up and do not charge you, they simply verify your identity. If you have valid identification and the amount stolen is small, there is no reason for the police to come, the security guys can/will file charges later.
Civil
This will be a fine mailed to you often from a third party on behalf of the retailer. Usually the fine is the amount of the merchandise PLUS a significant amount of money. Maryland is two times the amount of the merchandise taken, minimum of $50, max of $1000. PA is the amount of merchandise PLUS $150. Etc.
Pay the fine however you want. Payment arrangements, money order, check, credit card. IF you do not pay, they can take you to civil court and they will win. They only need to have a small burden of proof to win in these cases. My suggestion is to work out with them how you are going to pay. They want their money so if you pay $20 a month they are happy.