Samsung Service Center — Demanding service charge for tv installation

Address:

Kamrup Metropolitan, Assam

I had baught one LED tv from nagaon, assam one month back. They had given me the option of wall mounting which i declined.The technician concerned told me that wall mounting will be done free of cost within 6 months of purchase.But, the service people informed their head office that they have done wall mounting of the tv which in fact was not done.Later on, after one month when i did wall mounting with their assistance, they are demanding service charge on the plea that iam in possesion of the wall mounting clamp which in fact is provided by them.They are demanding service charge of 600/-.