Nedus Distributors — Online payment done but denying to give gas connection

Address:

Kolkata, West Bengal, 700039

I have applied for new gas connection at an Indane Gas distributors (Nedus Distributors ) on 14.02.17 vie reference no.: N170214140439404924481 and I did online payment on 24.02.17 for new gas cylinder. I got the order no. [protected] with which I visited Nedus distributors office on 4.03.17. They told me that their staff will visit my house next week for inspection and after that they will provide me cylinder. But even after 19 days nobody visited my house and when I am following them up over phone then they are abusing me and telling that why I have done online payment. They are are also telling me that they will not give the cylinder whatever I do. Have I done a mistake by paying online ? Is this the new way of cheating customer. Please help me to either get a cylinder or my money back.