SARS cleans out bank account even with up to date approved deferral in place!

Even with an up to date deferred payment agreement they still clean out my bank account. I logged on my banking app to make my agreed payment and I could not access my funds. After shocking service from FNB they told this was SARS. On reaching out to the person who the payment deferral was arranged with ( I even got a payment reminder in the week) she said she would escalate to her manager and then ghosted me. I reached out to their useless call cenre and was told to mail contact us ( I have calls from a year back that have still not been answered). Shocking SARS, a up to date deferral in place, no letter of demand and no notification! NowI cant work, eat, get meds, pay my house and feed my kids. My side of the agreement is up to date and you just brush your actions off. Shocking your own agreements are worth nothing!