IRobot Roomba i3 EVO Robot Vacuum

I bought this product renewed on Prime Day deal and knew there could be an issue. I was reassured that there was a 90 day return policy. After 8 weeks, the IROBOT just died. Keep in mind I use it maybe every other day and empty it every time I use it. I have a 1200 sf apartment (no pets, just me). I contacted Amazon and they said I needed to contact IROBOT customer service. So I called IROBOT customer service and they told me that that product was "out of stock" (even though it is not out of stock on Amazon at their store, ok sure), and they would "let me know" in 7-10 business days if they could send out a replacement. I never heard from them, so I called them again. This time they said they could send out an i6 instead and that I could just send back the defective product. I did recieve the i6 and upon opening notice that there was no battery, nor a charging station. So I placed the battery from the dead one and tried to charge the "new" one. Dead. I called customer service and spent about 45 minutes performing "testing" involving sending them photos and different things to see what was wrong. It was determined that they did not know and I would need to mail in the replacement for their repair shop to "test" it to see what was wrong. At this point, my floors really needed vacuuming (3 weeks now) and I had 2 dead IROBOTS that were useless to me. I asked for my money back (I bought the item from the IROBOT Store on Amazon) and they told me to call Amazon. So I called Amazon and they said that IROBOT would make me pay for shipping and a restocking fee to return it and then I could send Amazon proof of this payment and make a request for a refund. Really good on Amazon to offer to give me my money back, but I don't think I really have any faith in IROBOT as a company nor their products. So, buy at your own risk and make sure that you have some type of backup way to vacuum your floors.