Need help recovering Acer Tablet forgot PIN and Email and Can't contact Acer support

my Daughter has an acer tablet that she has forgotten the pin for. Problem is we also can’t remember what email address it was set up to and none of them we’ve tried work. I did the factory reset on it twice but it’s still saying we need the old pin or the old email address. I’ve tried to phone acer customer services, before you can speak to someone you have to give the serial number of the tablet, my serial number is ten digits not 11 or 12, so it won’t accept it, it cuts me off, same with the live chat, I’ve tried email and that just takes me to a random page to search things, which doesn’t yield any results, I’m about to throw this piece of [Content Removed] tablet at the wall, I beg you- help me! Even if it’s with an email address so I can actually contact a human at acer! Thanks

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