"We hired Lowes to install a new window to replace an old one. The one they brought out and installed was different than the one we ordered. We realized the mistake right away. After numerous calls and emails back and forth Lowes said there must've been a glitch in their system and the window we ordered was no longer available. Lowes said there was nothing more they could do so we are stuck with the wrong window. It isn't fair or professional for Lowe's to bring out any window other than the one we ordered and paid for. We are extremely disappointed in Lowe's customer service. We were warned by Lowe's competition about ordering windows from Lowe's but we thought they were making it up but they were absolutely right about what would happen if Lowe's made a mistake or if we needed help about an order."
Capitalised Atlas is a name, the name of one particular Titan; it has no plural, logically speaking. If one were required, I would probably say Atlantes, as that would be the regular plural in Greek, where the word comes from (not Latin). The plurals of non-capitalised atlas can be found in any dictionary and is off-topic as General Reference here.