IFB — Unbearable sound emanating from the machine when washing cloths

Gentlemen, I am having IFB Executive Plus washing machine. Of late unbearable sound is emanating from the machine when it is washing the clothes especially between cycle D-F-G. I filed my complaint to customer care number[protected] on 17.1.2015. They gave my complaint No. as [protected]. But till date nobody turned up to fix the problem and correct it. When I contacted them over Phone No.[protected] they informed that the work is allotted to one of the technician and he will come and attend the same. Till date no body turned up. Within a period of one year I have changed the drum, outer cover, tub and shock absorber. But still the sound is emanating while the machine performs its function. When the technician visited on previous occasion he told that since bearing is changed the sound will come and it will subside after one week. But there is no improvement. Please take necessary action to rectify the problem or let them say the problem is not rectifiable.