Samsung Online Store service failure

I would like to express my utter disbelief at the appalling service I’ve received from the Samsung Online store which I have contacted on numerous occasions via the Samsung Gateway store. I’ve been to the Gateway store on 4 separate occasions in the past 2 weeks and have been in contact(personally) with 3 agents at the Samsung Online store (that’s excluding the agent Instore whom also attempted contacting this store numerous time on my first visit). Each call with an agent at the Online store lasting no less than 30 minutes before they advise you that they are transferring you to a Supervisor who unfortunately never comes on the line after an approximate 45 minute wait just before the line goes silent. 3 agents have taken my cellphone number to get in contact with me, since Monday 01 February 2021, one of which went as far as requesting emails with screenshots of my query (which I willingly sent), but never received a response to. My query was quite straightforward as a glitch on the Samsung Online store prevented me from taking advantage of a promotion offered and ending 31 January 2021, I then went to the store to query if the glitch would mean me losing out on the promotion price. I did take screenshots to show my various attempts at making the purchase. I was advised upon my arrival at Samsung Gateway that this query would be resolved as everything necessary has been provided. Any feedback was welcome but I’ve not received any communication from Samsung Online store for a query dated 01 February 2021 despite my every attempt to receive a resolution to this query. This is absolutely frustrating and has resulted in an extensive waste of my time and energy used towards attempting to spend my money on a Samsung product.