Received awful technical support on an intermittently failing iMac. Initially told not to put it to sleep and not to use certain well known software and take it home when I knew it was a hardware issue - the power would just cut out. Took it back and they sent it off. 3 weeks later came back wiped with the os reinstalled. Same issue occurred. Took it back, 3 weeks later they had replaced the main board. Same issue again. Took it back, three weeks later they had replaced the wifi board. Complained and they said they didn't even count the first repair. Luckily I still had 5 days of the first year guarantee remaining so I booked it in with Apple Bluewater. They immediately said that would never be a software issue and also they would focus on the power components, the power supply, power inlet and logic board. They fix them on site and phone after 3-5 days with a fix time of 7-10 compared with John Lewis saying 28 days each time with no communication. After 5 days they phoned to say it was ready. Problem has not happened again. John Lewis have no communication between their tech support line and in store. No communication between in store and the company they use for repairs. And clearly that company are not good at all. Their three year guarantee on this case is worthless and i will pay at apple for any future problems.