Sony India — non conversion in emi

Address:

Patna, Bihar, 800001

I purchased one sony home theater on 02/09/2017 for rs.20990 under condition for six months emi without interest.
1. they debited full amount instead emi for rs. 3472.44 saying that it will be auto converted in a week.
2. now sbi credit card has debited for full amount. if sbi cards converts in flexy they will charge interest.
3. further they said that ezone has not informed them .

plz take up the matter at your end and get amount converted in to emi