I bought my phone on CL & the guy who sold it to me that went to store & reported he lost it so it became a bad esn phone, & idk wat to do after it but after that i found a phone store that can fix the IMEI, so i spent around 100 buck to fix it & it became normal phone that u can use on any carrier...& i was using for years then i decided to sell it cuz i want to buy another phone. So i sold to this guy & before he bought it, he checked everything, put his sim in & it worked perfectly. But 2 days later, suddenly he texted me & said that phone couldn't connect to 4g LTE, it stucked to EDGE... & He also said that i lied cuz sold a bad esn phone..even he already tested everything be4 he bought it..he wanted his money back.& now he wants to sue me, he has my picture & my phone number & he said he gonna send it to the police. He keeps texting me... So can he sue me w/ my picture & my phone #? Or what can i do?