Most telecom contact volume is a symptom of a decision taken outside customer service.
Billing logic, tariff changes, coverage issues, device offers and retention campaigns all generate contact, and the service organisation bears the cost without owning the cause. Volume arrives in peaks, staffing cannot follow it, and the regulator's complaint and resolution expectations are not adjusted to accommodate it. At the same time, subscribers compare the operator against digital services that respond instantly, which makes any queue appear to be a failure. The operators that maintain their cost line are those that resolve routine demand without an agent and feed interaction evidence back to the teams that created the demand.