Recently, it occurred to me that we use customer service for nearly everything in our modern life. Be it for "long distance" service (via phone or online) or "close proximity" service (store clerks, bank tellers, waiters) and I wanted to know what were some of best your experiences with customer services, and what were some of your worst.

For me, a good service I got recently was that I was wrongly charged for a phone line I didn't requested, nor a technician came to my house to install said phone line. It went on for nearly a year and a half when I noticed it in the bills, so I contacted said company's Customer Service in order to cancel the unjust monthly fee of the phone line (roughly $20.77 every month) and the representative said that I would be also refunded in full, without me even asking for a refund (of course I didn't refused the offer)

Now it's your turn