Climate compressor toss after two weeks?

Dear community after years without climate, i.e. driving around with open windows, I decided for our Greece vacation to replace the climate compressor. So new original part (Delco 15-20206) ordered and installed in USA. Has also wonderfully funtioned. For two weeks. On the penultimate day (i.e. also for the whole journey home through Italy) the thing then went on strike, i.e. the wedge belt runs, then I turn on the AC and the magnetic switch attracts. My mechanic thinks 99% of the compressor is gone. But maybe someone had a similar problem and there’s a way to get the thing back to work without ordering a new part in the USA again for expensive money? Or at least a trick to find out if it’s really the compressor or something else in the AC system? Thanks for every tip and good ride. Michael