Customer Services does not just mean offering a phone number or an email address on the site and hoping for the best.
To manage your expectations, if you’re operating an e-commerce operation, you’ll be very lucky indeed if your customer contact rate is less than 5-10%. This means for every 100 orders you ship, at least 5-10 people will contact you before, during or after their order. Of those same contacts about 50% will contact you again with a follow up inquiry. You must allow for this in your daily operations and have suitable staff allocation in place.
At first you will be able to handle the calls and the emails yourself, but for all the time you are answering a customer, or finding out what happened with their order, either internally or with the carrier, you’re not doing the other twenty tasks that need to be done.
For service providers, customer services also covers sales inquiries and client care, both pre- and post-sale. These inquiries won’t be so numerous, but without doubt each inquiry will be unique and will require a detailed and well researched response. Again, you will be able to handle this yourself initially, but eventually it will require its own resource.