How are mobile phone unlocking procedures done?

[ARandomPerson]

Hello friends, I want to ask something. I have a ready limit of 500 TL on ******** but I could only withdraw 200 TL to my bank account. I want to exchange the remaining 300 TL, how can I do mobile currency exchange operations? Many people on the forum seem to be doing this and I also want to benefit from this service, but I want to know what steps I need to take and how the process works. Are they asking us to buy a product using mobile payment by providing a product link, and then are they depositing money into the account? How does it work exactly and what do I need to do? I would appreciate it if knowledgeable friends could help out, thank you.