You still do not state what you did for the experiment completely. Did you just throw the chemicals together at room temperature? Did you heat the mixture? Did you bubble any of the gas produced through water? You do not have to write an abstract, introduction, etc to give us a better idea what you did, but what you posted is piecemeal and difficult understand. At this point, I can only surmise that you chucked a few chemicals together and watched to see what happened. Then you guessed a formula, which was incorrect, and postulated conclusions based on imprecise observations. A lot of time we can just throw something together to get an idea of a possible experiment, but then we have to repeat in a structured way so as to get at least a little more precise observation. I like when people experiment and learn, but I get disappointed when it is done in a sloppy way. Keep experimenting, but please tell us the whole story.
Also keep safety in mind.
I would have opted for the Mannheim process formula
2 NaCl + H2SO4 = Na2SO4 + 2 HCl
I would have never guessed the formulae you posted.
Seems there is more than one way this reaction can happen.