Dubious practice ?

On 8th December, 2016, my 90-year old father had a visit from an Everest "engineer" to diagnose a fault with his electric garage door operator. Without inspecting the operator at all, the Everest representative told my father that the motor needed replacing, saying "These don't often last more than five years". He then got my father to write him a cheque for £1,250 ! There was no written quotation or receipt.

On 28th December I inspected the operator, and found that the lightbulb had failed, causing the internal fuse to blow. I replaced these, and the operator is now functioning as expected. Cost to fix £3 !

My father 'phoned Everest five times, and was repeatedly offered a refund, but Everest did NOTHING. I took over the matter on behalf of my father (after he completed a Third Party Authorisation form, as demanded by Everest).

Since then Everest consistently "fobbed me off" with repeated promises of "escalated to senior management", etc., and offers of a refund.

Finally Everest did send a refund of £1,250 on 8th February. However the company refuses to explain :
1. How this was allowed to happen ?
2. What will be done about it ?
3. What steps will be taken to ensure that other customers are not treated in a similar fashion ?

I am quite appalled at this mode of operation and the way that a senior citizen has been treated. From reading reviews here, and elsewhere, this experience with Everest is far from a one-off.