In one instance, an employee refused to remove a complainant’s details from the company’s system and threatened to “continue to call at more inconvenient times like Sunday lunchtime”.
That is one thing that I don’t regret doing: getting rid of my landline phone. BT and the other telephone companies should be doing more. You should be able to press a button during the call that disconnects and blocks the caller. It’s the person who pays the bill who should be able to decide who gets through and who doesn’t.
A telephone shouldn’t be just another avenue for people to sell you crap you don’t want.