After you file

I sent my first return in in January and tracking number showed that it was received January 5th and then when I checked later they said they didn't receive it to send another one and so I sent another one in and that one was received March the 6th and it showed as accepted on Where's My Refund and then disappeared and then when I called yesterday she said it's because they received the duplicate which after they received the second one then they received the first one. so now it says duplicate return and she saying that is can take up to 16 weeks to process that and that I cannot check on where's my refund I have to check on amended return but every time I check on that it says nothing showing for my social security number and someone else told me that I can still check on where's my refund but it's not showing nothing on that either getting aggravated I've been dealing with this since January and I keep getting the runaround at different stories on different times when to call back when told me to call back next week and then another lady told me I have to wait 16 weeks before I can call back just wish somebody could tell me what's going on with my refund