They bought some equipment, captured the imagination of the sales team with stories of massive purchases, bought one moderate purchase and then for over a year RAN OVER the support team in an effort to get what they wanted. Problem was they wanted the world and bought an island of equipment, and claimed we should provide them free the appropriate equipment because they might just buy more.

Their IT staff was so unprofessional / prone to delivering insults rather than providing data I started hanging up on them. Fortunately my boss was supportive. This was an environment where we never had abusive customers, stressed customers but no personal attacks.

Finally someone got in the CEO's ear and demonstrated how much time and money we were throwing at a customer who was not happy, would not buy the appropriate equipment, and had never paid a dime on their support contracts. He cut them off.

Total waste of time and money dealing with Walmart. Nearly 20 years later now when old coworkers get together folks say they still won't shop there because of the calls they took...

If the customer is always angry, sometime the best thing is for everyone to move on.

We actually had some other customers we did that with where they were invited to move on (we supported them in the meantime of course).

For some of those customers after they realized the lay of the land moving to other systems, they came back and things were good (not Walmart).