I am a little confused with distinguishing the different 'le' (I understand the lesson, just not sure how to spot the difference) -
This lesson le = them.
In another = Le offro un gelato = I offer her an ice cream.
Could this also be 'I offer them an ice cream' or would that be spoken differently? Thanks in advance x
To spot the difference, you need to distinguish whether it is a direct object pronoun or indirect object pronoun. Then you can look it up from a table of clitics. direct object /indirect object pronouns.
In your first example and in this lesson: Le is a DIRECT object plural feminine pronoun: We call them (It is women, girls, or sisters, etc that we call)
In your second example: Le is an INDIRECT object pronoun (feminine singular or Formal you singular): I offer (to) her an ice cream.
In order to overcome object pronoun confusion, I refer very very frequently to a table of them. Eventually it becomes ingrained. Here is a link to clitics/object pronouns; you can skip to the table: https://forum.duolingo.com/comment/16418558/A-Duolingo-Beginners-Guide-to-Clitics
Curious as to why it is "al telefono" when I have found several sentences using "sul telefono". For "sul telefono" I notice that "telefono" is not by itself and usually has an adjective to it but should that matter? https://context.reverso.net/translation/italian-english/chiamare+sul+telefono