Canara Bank — Canara Bank has not credited my account

Address:

Robertsonpet, KGF TQ, Kolar DIST, karnataka -563122

I have not received my refund amount from Canara bank for two cancelled orders from purplle.com and for the moment and I have communicated with both customer services, but they informed that from their end they have processed amount and they told to contact bank for a refund of the amount.
The transaction done for Mamaearth is 28th July 2020 and for purplle.com is on 4th august 2020. I'm not able to raise a complaint through online as I'm getting as invalid input and I'm not able to contact respective branch.