IFB Industries — To know the price of spares

Our washing machine is senorita aqua 5x 6.5 kg front load. Now machine is not working properly. So your technician is telling to replace Drum along with rubber and one more part (I forgot its name) is it so? Is it not possible to use the old rubber which is in usage?
01 Now my question is what are the parts to be compulsorily replaced along with drum?
02 Three months back your technician had brought and replaced the said machine motor for 4000 Rs. is it correct price?
your technicians always bring spare parts with sealed cover which does not have MRP on the cover. so that they can cheat both the customer and the company. How can we come to know the price of the spare parts.
please let me know all these . I'm waiting to get my machine repaired immediately as soon as I get answer from your side.