Poor customer support

I work for an IT company and we resell products such as Office 365, we purchase the package from our supplier, create a new microsoft account and redeem the pre-paid key purchased from our supplier to the newly created account, we then go to our clients and deploy the package on their devices. We have sold hundereds of these and recently I set up office 365 family on a newly created microsoft account as usual and when i went on site to deploy the account wouldn't sign in, i attempted recovery and the automated system didn't like something in my response so i have been locked out of the account with no additional means to recover the account. I called for support several times to different numbers and the response from all representatives was that the system was automated and they could not help. I offered them proof of purchase from our supplier as well as the box with key card that is in my possesion as a means to proof i am not a ***** but they said there was no avenue available for me to escalate and send this to anyone which i find extremely poor. By automating everything Microsoft is making it harder for the end user, i can't immagine how many other people this has happened to and i as an employee have been burnt because there is an expensive product we have purchased with intent to sell to our client which is paid for and cannot be used and our only option is to purchase another pack and i have to pay for it from my own pocket.

I'm doubtful Microsoft will give 2 hoots about this review because they are a multi-million dollar company but who knows, maybe some humans with good intentions do still survive among them and someone can reach out and help me.