Bad experience of mobile repairing

I have a Samsung mob. Few days back its display was broken slightly from a corner. I did not get it repaired because it was manageable with it moreover i have an  impression that once u give mobile for repairment, those people may remove some original parts from mob and one more reason is that Samsung centre compared to others charges much. Yesterday i made my mind to get it repaired. So after enquiring 3-4 local shops regarding rates i finally gave it to the one whose repairing rates were lowest. I was not aware of the consequences. He promised me that I can collect it day after tomorrow . When next day I vistited his shop he said its not ready and asked me to come in evening. Like this he made me visit 3-4 rounds of his shop and finally 4th day he handed me over my set. I checked the set and paid the money. After reaching home i made a phone call to my friend. I was able to hear her voice but she was not. First i thought may be there was some problem with her set then i dialled 3-4 other numbers. Everyone was not able to hear my voice. Then i could make out(figure out suits more) there was some problem with the set. I rushed to his shop, detailed him about everything adding that my set was on working condition when i gave it to u except the broken display. To my shock when he said- What can i do. i have nothing to do with this problem. I said u have to make it functional because problem arose after repairing. He said its myke is not working. U have to pay extra money to get it repaired. I said why should i pay extra money, i gave it to u in the working condition. This problem was not there at that time . Hot arguments occured between us but all in vain, people started gathering around. I felt so embarrassed. I took the mob back, went to other centre and got it repaired again giving extra money. During this i lost my mob memmory card also. I was so annyoed with that mobile repairer. He spoiled my mood. The whole day i was very upset thinking that incident. I was cursing myself why i have not got it repaired from Samsung service centre because it almost costs me almost same amount as samsung service charges.