If they were planning to stay with their current provider on their current plan, perhaps. Off-contract: Customer: "I'm thinking of switching to provider B as m

If they were planning to stay with their current provider on their current plan, perhaps. Off-contract: Customer: "I'm thinking of switching to provider B as my bills are high." Provider: "I'm sorry to hear that, can I knock $15 off your bill?" On contract: Customer: "I'm thinking of switching to provider B as my bills are high." Provider: "Certainly, that'll be $200." (Or your remaining ETF amount.) But hey... free phone!