Disappointment with Samsung Promotion Claim Process

I am extremely annoyed with the promotion currently running for the Galaxy Buds and Galaxy Fit 3 watch when you purchase any A55 or A35 cell phone. I purchased an A35 phone within the promotional timeframe, downloaded Members app and completed the registration process for the claim. I received the email confirming the receipt of my claim. A day later I received another email stating they could not validate the purchase, and I should upload the documents to a link provided in the email, which I did. Another email came back to say it is undelivered because with the following message. Your message couldn't be delivered to *** because the remote server is misconfigured. See technical details below for more information. I tried sending the information from my work email getting the same reply. I then tried to re-do the registration on the members app but it told me the IMEI number was already registered. I then tried the WhatsApp route and received the following message : We unfortunately could not validate your submission. Note, we require the following to validate your purchase and request. The proof of purchase with verifiable details such as the CORRECT IMEI NUMBER, store name and date of purchase (Contract/TIII slip/Tax Invoice). Email us the required documentation at ***. For any queries, please call *** or e-mail us at *** from 8am to 5pm, Monday to Friday, excluding public holidays. Regards, The Samsung Team. I have sent the required documentation four times, yet no changed keeps on getting the same error. I then also tried contacting the Samsung promotions number listed in your emails, but after hours of holding on to just speak to someone – no luck of anyone answering the phone. I am still left without a resolution. This experience has been absolutely outrageous and disgusting, and I am shocked by how misleading this advertising can be. A "BIG" brand like Samsung should surely at least have someone answer the phones if anything else. I am really disappointed and upset about how there is just no follow thru. No replies and no way of getting hold of anyone to enquire what to do. I have done everything that was asked but I still have not received the watch and buds as promised.