Eko disco promises effective delivery of service

I think there may be a bit of a language barrier here!

It seems like you're trying to say that "Eko Disco" (which I assume is a company or organization) promises effective delivery of service. Here's a breakdown of what you might be trying to say:

• "Eko Disco" is likely a nickname or abbreviation for a company or organization that provides some kind of service.
• "Promises" means that they guarantee or assure that they will deliver a certain level of quality or performance.
• "Effective delivery of service" means that they will provide the service in a way that is efficient, reliable, and meets the needs of the customer.

So, in summary, Eko Disco is promising to deliver their service in a way that is effective, reliable, and meets the needs of their customers.