How are mobile phone repair operations carried out?

[ARandomPerson]

Hello friends, I have a question. I have a ready limit of 500 TL on ******* but I was only able to withdraw 200 TL to my bank account. I want to exchange the remaining 300 TL. How can I do this through mobile exchange processes? Many people on the forum seem to be doing this, and I also want to take advantage of this service, but I want to know what I need to do and how the process works. Do they ask us to buy a product link with mobile payment and then transfer money to the account? How exactly is it done, and what do I need to do? I would appreciate it if knowledgeable friends could help. Thank you.