Morfurniture

My wife and I were looking for a comfortable sofa with a feet rest. After salesman Ricky Johnson showed us six or seven sofas, we settled on a comfortable one for $999.99 during the store's 4th of July sale. The sofa is fine, average quality, comfortable, but the billing was ODD.
Glancing at the bill, I noticed that Mr. Johnson had added an extended warranty for $149.99 without our acknowledge or consent. I mentioned that we did not choose an extended warranty. Mr. Johnson explained that my request for and his "removal of the extended warranty [charge of $149.99] will increase the cost of the sofa by $149.99". I asked why there is an odd need for an extended warranty charge to keep the sales price of $999.99 so that the net effect is that the sofa is not really on sale for $999.99. While I was trying to make sense of Mr. Johnson's odd billing, I walked, picked up, and bought back the sofa's sale sign and pricing. Showing Mr. Johnson the sales sign, Mr. Johnson proceeded to explained that the sales price is for a left side footrest section, not for a right footrest section, and he needs to raise the price by $149.99 to cover a right side footrest section and, if he removes the extended warranty charge of $149.99, he will need to raise the sales price by $149.99. That explanation is understandable, different sided footrest sections may be priced differently. However, seeing that Mr. Johnson newer explanation still incorporates an extended warranty charge of $149.99 or, leaving the extended warranty out, a sales price increase of $149.99, I find that his pricing and reasoning unusual. Since my wife wanted the sofa, I signed the contract.
At home, thinking more about the odd transaction and how an unordered extended warranty is unusually involved in the transaction, I called the store and was routed to a central customer service call center and requested CANCELLATION of the order, aware that there is no three days California "cooling off" period for furniture transactions.
The customer service representative (rep) stated that she has canceled the order. I requested an emailed cancellation confirmation. The rep stated that she will immediately email a cancellation confirmation. After forty-seven minutes, there is no email confirmation. Seeing that I had received a text from the company with a sales confirmation, I tried cancelling via text. However, text is not available for cancellations and advised that I call customer service. Consequently, I phoned again and explained that a first rep has not emailed a cancellation confirmation. This second rep explained that the first rep DID NOT CANCEL the order but only forwarded a message to salesman Ricky Johnson. Again, to a second rep, I directly requested an order cancellation. This second rep sincerely apologized, complied, and emailed a cancellation confirmation. On July 4,2024, I received a credit card company email that Mor Furniture has issued a credit for the purchase.
Why is an unsolicited extended warranty involved in this purchase? Why were there difficulties in cancelling this order?