wort services

We took one off our nissan np200 to the NTT Nissan inn bloemfontein for a 30000km service withch cost us R 3292.80 this is just because we did not bought a service plan on this vehicle i think. But they explained the invoice to me and when i started asking questions about stuff that has been replaced and the old stuff was not given back to us the servicess agent told me it was full of oil and that were the reason it was not given back to us. Neverless we were charge for a washer drain plug witch was not replaced as the one in the vehicle is still the old one lock nuts for the drums we were charge for 2 of them witch could not have been change because the back drums are still dirty we were also charge for brake fluid witch was also not changed and were not top up as the brakefluid in the vehicle was still on the full side this morning when whe had our weekly vehicle checks on the vehicles. So how many customers are fradulent invoice for stuff that has not been replaced. We thaught as our Datsun go was in an accident and are written off we would by 2 more np200 bakkies but from what had happend today we wil defenitly not by anny nissan vehicles any more