Intex Mobile — Bad service

I have purchased an intex aqua i-5 mini set which was in gaurentee period .I got problem in the set and approached to intex service Allahabad on 18/06/2015.They recd. the set under jobsheet no[protected]T001 and told me that they will inform me when the product is repaired but they did not inform me and I have to go to them to check the status.After two times of chasing they said on 04/07/2015 that the product has been repaired and i can take it. I took the set and checked it before them but surprised that it did not got even started.They again took back the set for repairing under jobsheet no.[protected]T001 and told me that the set will be sent to head office for repairing and it will take about one month.After that when i reached the service centre on 06/08/2015 they gave the product but again it was not in working condition, They took it again for repairing under jobsheet no[protected]T001 and told me that it will take about 25 days.Now i am disappointed from such type of service and could not understand what to do? But one thing is sure that in future neither i am not going to purchase any product of intex nor suggest anybody to do so.As a consumer i am ready to purchase any company's product provided that their serrvice is good.