Hr department being rude

So i never even got to work for them really i was there for two days in training and decide to leave because of the front they put up about the company but there ways of doing things never added up, anyway now i require a letter stating i had left during training and never got paid as it was placed on the system that i got paid and now my money cant be given to me because of this. I have contacted the hr department countless times and im furious as today the 15th i got through to Mellissa and asked if she could send the form today so i can take it in i was told all sorts of excuses before that and said i must send her an email which i sent this morning i still haven’t received anything i mean for someone trying to contact since Monday last week and still be treated like **** is very very disappointing she was very arrogant as if i owed her something from the start i just need this letter asap thats all i need please