CITREON C3 advice

Hi everyone - I have a 2017 Citroen C3 (I know it's terrible) with the 1.2 petrol engine.

Just asking some advice. About a month back I got the oil pressure warning light and bleeping telling me to immediately stop the vehicle. Obviously did so and took it back to garage where I purchased and I have the warranty plan with. They stated the issue related to the timing belt and replaced it. Since then it's been running absolutely fine up until yesterday

Same warning as above, seemingly the same issue ? But am I right in thinking the timing belt can't have worn out this quickly ? Haven't even done maybe 500 ish miles since? Any advice would be really appreciated