IKEA Canada

I ordered $6000 furniture online on May 2017, and some of the parts were damage during the delivery. Called them to replace and also refund for some items.
1. Firstly, the call center agent misunderstood my message, and redeliver the items that i would like to return. Also, the delivery guys refused to pick up the items that i wish to return and not telling truth to Ikea that we refused to give the items to him to send back. I don't understand that i was waiting for so long for them to pick up, and the guys was telling the truth in front of me. I spoke to agent after, they don't believe me, anyway, i have all the return items ready for them to pick up in the living room, and i can't place any furniture to the living room since it was so messy.
2. After the delivery guy picked the item from me, it took over a month for them to deliver my items to the Ikea store. I don't understand why it take this much long time, and why Ikea did not take any action for this kind of service. Every time, i call the agent, except waiting over 30 mins, they told me totally different story. Some of them told me the store received my items on this date, and will refund next week, and when you call next week, other agent will tell you your items received on the other day, and it will take another few days to get credit.
So far, i have not received any credit from my refund items. Will never ever choose Ikea again, and will alert all my friends and family members.
Anyway, i think the most fault is from the delivery company. It was too much waiting for them to ship my items from their warehouse to the Ikea store. And the call center agent was not profession enough to get my point.