Rameshwar Home Appliances Sarjapur Road - Cheat over grinder repair

Rameshwar Home appliances in sarjapur road bangalore, I went to repair prestige grinder on Friday(**th june ****). Though he informed to replace with new prestige armecher in prestige service center that takes two days, it was repaired by **th june with no prestige armecher.he just added one which I shared in the evidence that cost rs ** and he charged ***rs and prestige regulator for the grinder was missing instead he put local regulator which was not new and did not inform too. As the issue persist I went to another service center and got to know that no new armecher was replaced instead the part(in the evidence) was newly added that cost **rs maximum and prestige one comes for *** rs however he charged me ***rs. As I went to rameshwar shop again to inform and show the picture, he simply denied for all the information and gave me *** rs back. I insisted so much to let me know the service center number or name but he did not tell me at all saying that "I dont have number". I am very much sure that he did not go to any service center rather he did the service there itself and cheated me over ***rs(returned *** from ***). Please help getting my money back.