Syndicate Bank — mobile banking amount debited but not credited

Dear sir/mam,

I have an account in syndicate bank. I did a online transaction through mobile banking amount of inr 7000 on dated 05th feb 2019 at around 10.00 am
The amount has been debited from my account but receiver did not received.
After that i have received message that you transaction time is time out i have also called to syndicate bank customer care no. They said your payment has been declines it was not processed so your amount would be returned by bank with in 2 or 4 working days, but now almost 7 days over i have not received my wrong debited amount. It is request you to kindly advice what i need to do or how many days they will take to give my amount return.