MRF Tyres — I didn't get my refund yet and instead they misguiding me..

Address:

Krishna MRF Tyre, Yamunanagar

I purchased a bike back tyre and it get damaged in warranty. So I go to MRF tyre centre [Krishna tyre, Yamunanagar] for the replacement. They charged me 2300Rs and gave me a new tyre, and they told me that I will get a refund in 5-6 days of the old tyre, amount on the basis of condition of tyre like how much it was rubbed. But Now it's more than 1 month and I haven't received any refund or any SMS regarding that. Here is the contact information of that MRF center.[protected]. Everytime I go to that center, they gave me excuses like they don't know how I'll get refund and he's not sure. Instead they asked me to take 900rs for that tyre for no basis. They trying to make their money and misguiding me, No Customer Satisfaction. I need action regarding that and want my refund.