Swiggy — cod option not available

For ordering food online, I use swiggy app quite often and after i cancelled my order in the second week of december 2018 once, pay by 'cash on delivery' option was made unavailable for me. And i don't have a bank account, i can't pay online. Please help because disabling cod option is not allowing me to order food from swiggy anymore. I like this app but them disabling COD option is being very inconvinient to me. I don't like this step of them because it is wrong, cancellation of order is normal and they didn't notify me about the reason of disabling cod.