420 IPC , police is calling me to Police Station. Should I go to Polic

On 19th of july 2019, from my room in patel nagar, police captured me and took me for an inquiry. They caught me through an IPhone that was involved in some criminal activity. They were suspecting me of being involved in the same criminal activity. But the IPhone used by me was something that I bought from OLX. They inquired me and I told them the truth. I had the adhar card and contact details of the seller and police verified my call with the seller and I was found to be saying the truth. They got convinced to leave me and lastly let me leave with a paper that says I have a case of 420 IPC against me, which they said would be a weak case to get a bail from court. They asked me to remain in continuous touch with them but due to certain circumstances I was unable to get in touch. Now, some 3 months after the incident they called me to come to police station. Their voice tone suggests their preparation to arrest me anyhow. Please advice me what should I do. Should I go to PS.