Qatar Airways — No help at all!!!!

We have bought a ticket to Jakarta on NOV 19TH 2021 leaving from Europe. We have requested an invoice next day because we payed via a company card and we really need it before we leave. Until this point we have callef several times and they have always said that next day the invoice will come but it never did. They have the wors customer service EVER! I requested to speak to a supervisour and they just hang up on me, even tho i was polite and nice. If an invoice is a problem, i am hoping i will not have a seriouse one! Please use other airlines, Quatar is the worst!