Poor and dishonest Service from Motus Honda East Rand

I must say I'm really disappointed with this dealership - hoping to purchase a motorbike from a reputable dealer in order to get some peace of mind. I purchased a used motorbike from this dealership (the bike had just over 30 000km) and was in good condition, having only minor things mostly cosmetic items to fix. The bike did not have a FSH so the dealership agreed to do a oil service before I took delivery. After taking delivery I was going through the bike with a fine tooth comb and saw the air filter was very dirty so I decided to take the bike to a certified BMW mechanic to give it a thorough inspection and service. All was well but he informed me that the oil was pitch black and has not been changed for some time and that the protection plate over the sump was missing 3 of the 4 mounting rubbers and bolts. This was then replaced at my own cost. I contacted Motus Honda (East Rand) to inform them and request some feedback and compensation for these items which should have been replaced as part of the pre sale oil service. Long story short they refuse to reimburse me - that's terrible service in my books - please don't take the dealerships word and inspect for yourself. I will give credit where it is due - the saleswoman was great but the workshop and service department...you guys must catch a game and learn a thing or two in customer service. Bike was also delivered with the below license disk holder.