Visa Extension denied at Koh Phangan Immigration.

UPDATE

We went to samui immigration and got the extension in 10 minutes.

We stayed in Thailand from late October 2023 to mid-April 2024, based on visa exemptions, extensions and two border runs during this period. We re-entered Thailand on November 8th, 2024 at BKK Airport, we were questioned and asked for a return ticket. We showed a return ticket for 60 days later. They further told us that we did a visa run with stamping out and in on same day earlier this year and that we should not do this again. (We did this with a service.) Eventually we got stamped in until January 6th. Now, in Koh Phangan, immigration is refusing to extend our visa due to a remark in the immigration system about the return ticket and that we have acknowledged the visa run. They say we must leave. Has anyone else faced this? Can we try Samui or another immigration office? Any advice appreciated.