Item not assembled but assembling fee was paid

I bought a side drawer pedestal from Decofurn Furniture on the 21st of December 2020 and I paid for assemble fee but when my order was delivered, it was delivered unassembled. I've been calling everyday since it was delivered to get someone to come and assemble it but every time I call each agent promises to get back to me but they never. Look I could have just returned the damn thing since they don't want to assemble it but I didn't, all I want is for them to assemble it cause I paid for that service and they are not delivering on their promise. I'm really upset cause every time call they give me a run around.