Online service nightmare

I placed a tommee tippee baby bottle order online on the 6th of November. As my delivery date was the 21st of November. The bottles were black and white or should I say the normal color which was fine with my as my baby is a boy. I received my order on the 9th however there was a mix of color's,there were 2 pinks,1green and 1black and white bottles which wasn't what I ordered. I wasn't happy so I sent Ww an email and also called their call center. I spoke to a lady and I even asked if she could check if any of my nearby stores have what I want in stock so that I can go and do an exchange at the store as I was avoiding waiting for them to deliver the correct item. Non of the stores had stock so she advised that she arranged for an online exchange for the following week and that was ok with me as that would have been before my delivery date. Days passed and I didn't hear anything from ww so I sent a follow up email on the 14th and got no response. Called on the 15th and spoke to an agent who advised that the last agent I spoke to only tried checking stock from other stores and that they didn't request any changes. I then started panicking as I waited the entire week for nothing. She then requested the exchange on her end and requested me to send pictures again via email which I had already sent on the 9th. Sent those pictures again and was advised that someone would come collect and deliver the correct items and they would make this an urgent request as we now had less than a week before my baby arrives. On 17th I received a call from their driver requesting my address which I sent. He arrived and I met him outside with the wrong order, I handed it over to him and asked if he had the correct one, he advised that he was only told to come pick up and doesn't know about the delivery. I was so stressed and disappointed as I still didn't have the correct order. I gave birth earlier than expected,gave birth the same day 17th, received a call from ww the 18th to inform me they still working on the order, told them my baby has arrived and I need the bottles asap and till today I haven't received my order I'm at home and had to buy cheap bottles for the baby to drink while we wait for ww to sort their mistake out. The experience was a nightmare and stressful especially because I was also pregnant. If I had known how *********** they are I wouldn't have bought from them especially not online but did so as it was easier for me based on my circumstances.