The Federal Trade Commission (FTC) has sued a Nevada-based company called Laptop & Desktop Repair LLC (LDR) for allegedly bilking thousands of customers out of millions of dollars in promised funds for the resale of their smartphones.

LDR operated dozens of websites that promised customers high returns for their smartphones and tablets using an instant quote generator. The customers, believing that this website would pay the highest price for their used gadget, sent their phones to LDR. Once LDR received the gadget, it would offer the customer a “revised quote” that was often only three to ten percent of the original quoted price.

Customers only had three to five days to dispute the revised quote, the FTC’s complaint claimed.