The sales people are in a different department and tend to only deal with prospective subscribers. The service department for existing subscribers likely isn't aware of sale prices due to not dealing with prospectives.
If you're not seeing any indication of and end date to a price when signing in to check what plans are available to you, there's likely no discount available right now and what you're seeing are the regular prices. That doesn't mean there won't be discounts available in the future, however, as they do occasionally offer discounts to existing customers who change plans.