Error running stored procedures in laravel 5.4

I am trying to run a stored procedure on my laravel project but instead of returning the result, it returns 1

Here is the query

$telco_id = Auth::user()->telco_id;
$result = DB::statement('CALL soldToVendor(?)', [$telco_id]);
return $result;

I am not sure if I am calling the stored procedure though but the above syntax was what I got from searches done online.

PLease why is it not returning the desired result?

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