what would you do in this situation?

You loaned your friend ₦4,000,000.00 last year and since then, he has refused to pay back, which has deteriorated the friendship. You beg him to just pay you ₦2,000,000.00 and forget the rest because you are in a financial crisis. Your friend then says he can only get you ₦1,500,000.00 since that's all he has. You feel like you have no option but to accept. You eventually give him your account details to send the amount directly to your bank. You wake up the next morning, checked your account and there is ₦15,000,000.00 in it. You kept staring at the screen in disbelief but it is indeed ₦15M. You grab your phone and find 53 missed calls from him and an additional 27 text messages begging you to transfer back ₦13,500,000.00 since he only meant to send ₦1,500,000.00 and mistakenly added an extra "0." As a well-brought-up person, what are you supposed to do: 1. Send back ₦13,500,000.00 2. Take your full ₦4,000,000.00 3. Keep the entire ₦15,000,000.00 4. Switch off your phone and relocate Let's see some Options. What will you do ?? 🤔