That is a question Metro can answer, not us Google guides. Have you tried looking up a solution on YouTube? I'm sure there is an option to switch the language back in english... except, well the operator would be saying it in Spanish...
Learn Spanish? Seriously now; you're not asking you store employees when you ask here. You're asking Google users. You're best just walking into the store and have them fix it for you, or probably ask a Spanish speaking refund to charge the settings for. I say this because you'll get step by step instructions, but in the currently set l language.
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