I recently bought a 2021 petrol polo from Agnews of Belfast had been booked in for a service but in the meantime there was a few lights appeared on the dash I arranged to take the car in earlier 9.am on a Thursday morning got car back 7 hours later but the lights are still on the dash. They say the car needs a new battery which the warranty won't stand over said the car was not getting enough driving I have done 6000 miles in 7 months. By the way £250 for a battery. Any help would be great many thanks 

Without seeing which lights are on its hard to tell but generally if they are red then you have big problems, yellow (amber) then only usually advisory

Let us know what was diagnosed at the service