Interview Customers

We would like to hire freelancers to find and interview customers (& potential customers) of Tul (https://tul.com.co/) and Frubana (https://www.frubana.com/) throughout Mexico City. These customers tend to be small, non-digitized hardware stores (for Tul) and street food and small restaurants (for Frubana). We would provide the freelancer with a script and list of questions (in English) to be translated to Spanish and used when interviewing the customers. We would like the freelancer to interview 10 - 15 customers of each company and would be open to any ideas as to how to find those customers.

thank you!