A question about combining 2 connections

So I did some research about Internet bonding where you can combine 2 connections to combine the bandwidth. From what at&t told me, they allow internet bonding in my town and then a tech called and said they didn't.

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So my question is, will that work if a tech is telling me bonding isn't available yet in my town if I go through the load balance broadband router?

The only bonding you can do with att is pair bonding.  But that's for a single account (i.e., address) and only if it is possible or available to your specific address.  If att told you can't have a pair bond connection then you cannot.  You certainly cannot combine some other service's internet with your att internet.

I'm not talking about connecting another internet connection like mediacom with at&t.  I was referring to combinging 2 at&t accounts. If  it was possible to have at&t install a 2nd uverse internet connection and combine it.

Sorry, miss-understood.  Don't matter though.  You can have only one internet connection to your gateway per account (even if it could be a pair bond) and only one att account per address.  So the answer is still no, you can't do this.

It's okay. Maybe I worded it wrong to cause the misunderstanding. So if pair bonding isn't available, you're saying I can still only have one account per address? So they can't even install a 2nd line even in someone else's name at the same address so I didn't have to share the 18Mbps down with other devices?

Correct.  Name doesn't matter, address does.