I lost my P4 machine

I had a P4 , 1.7 Ghz , Intel 845GBV system. Sometime back there was no signal going to the monitor and I gave it for repair to Sanghvi Computers. What he said is the MotherBoard has cupped and needs replacement, but to support my system he can't put an Intel motherboard because it won't be compataible. I said Ok, do it I will come and collect it. When I went to the shop he had replaced the motherboard, don't know what company it is and I didn't care also. He said there is some problem with the SMPS and needs change, I said ok do it. I put a new 256MB DDR Ram and was happy that now my system will work. FUCK THY SHOPKEEPERS. Now this is what sucks bigtime with these marwari comp shop owners try to act smart. This guy had removed my LAN card, and when I asked for it said it was not there. I said check it must be there, and obviously it was there and he found out, next was my CPU cover, he said you must not have brought it to the shop, wtf, checked again and found it, the thermacoal pieces were not there inside, I said you have to give, he found out them also. I was so pissed up with this guy that I almost had a fight with him. Ok after getting everything I brought the CPU back and found that he had put a Intel Celron (R) on my comp. When I called him back he said it must have been a Celron that you bought. What crap, these guys simply won't agree that they have done a mistake and instead question. Now when I told him that it was a P4 he said ok I have a spare P4 which has cupped and since he doesn't keep spare in his shop that must be mine. WTF he didn't say anything about this when I asked what needs to be repaired. I believed that my MotherBoard and SMPS cupped and I had to do that because, I had bought the system from him and I didn't have any other option. Now this guy says, take an AMD motherboard and processor which will come for 5.6k. Why the fuck should I take it now paying more, when I had a running P4 machine and he didn't mention it anytime. How will I believe that all my motherboard processor and SMPS cupped at the same time. This sucks bigtime. And after all this happened this guy doesn't just agrees that there was a mistake, but he is not ready to do anything. So why should I suffer because of his mistake. If he doesn't give me a good deal in anything now, there is one thing for sure, I will put up notices in all 12 hostels saying that what these guys do and not to buy anystuff from his, he is not reliable. It will cost me just 10 bucks. And atleast he will lose 10k minimum for that. Now he will realize how a single unsatisfied customer can divert his customers away from him. This is in the pipeline if he doesn't offer me a good deal. Lets see, but one thing is for sure, in anyway he is going to loose many customers just because of me.