Online order issue

I am on a call with the customer service representives and what appalling customer service! I called yesterday to chase on an order which was estimated to be delivered on or before 9th September. The first agent advised me to call the couriers myself as the couriers had some technical issues with the orders. So I asked why is it now my responsibility to call the courier when I am calling the store I purchased from ? The lady spoke over me and commended me to "Listen" with a tone that wasn't good. I asked to speak to a manager and she gave me a run around and eventually spoke to a manager. The manager is a good ****!! How do we promise customers a call back and never attend to it? Both the manager ans agent fogged me off yesterday.

Today I called again. Not once but thrice. First call was on mute, second call the agent took my order number and put me on mute for 3 minutes and this one I am on the line with has kept me on hold as I asked to speak to the manager. What training is offered to these agent? Are they given proper customer service training? I want someone to contact me and explain what in the hell is going on with these nasty agents ? It's disgusting. I want a copy of all my call recordings as I want to take this further. I will go to the extend of blowing all your social media platforms. I want this attended to. There's no way agents are this comfortable disrespecting customers. What in the hell?