Phone upgrade issue

The T-.mobile teck support that I call doesn't understand,aknowledge or assist 'Standard' account for someone with a separate primary account holder.My account had been given assistance at this Top Tier,non primary  status For the first few month of service,no problem at all for everything ecept the protected financial  information.If  I were to get a technical  problem  that cost no money I was helped.Now I am asked to beg to be given financial access to the account of the person who gifted me an account to use as well as the device..The tech person calls him,annoys him and makes  our relationship strained.I don't want to be involved in his financial t-mobile financial  information. The phone is literally not the same configuration as when the contract started.Conversation with the t mobile people is useless 90% of time. Please do not promise Standarrd membership if you are unable to enforce or honor it. Thank you s guss