Dishonest customer service

I took my vehicle for service dated 30 November 2019. The kilometers reading was 46585 and I was charged for the 60000 km service. The service included changing of engine flush, oil filter, engine oil, air filter, pollen filter and tank fuel filter as well as tyre rotation and wheel alignment. However, during the month of May I had to rotate the tyre and do the wheel alignment at 54600 km and in addition paid for my oil change and oil filter at 59890 km. The service intervals are every 15000 km, this implies each time the vehicle went for service I received devious and ill intended customer service. The purpose of this information is that dealership customer care and pricing is not honourable and transparent, therefore my plea is that customers intending to conduct business with Mazda Hatfield, to scrutinise and ask relevant questions on work claimed to have been done. I question the integrity and reputation of this branch.