Being taken for a ride...

I have been temping for this agency since July and I really thought they always had my best interests at heart and that they would take care of me as an employee but I am shocked at the way they do things when it comes to wages. As a temp you get paid weekly as per their contract but i must say the way they've been inconsiderate when it's time to pay is shocking. The first time this happened i took it as just a mistake, had to wait a whole weekend for them to sort it out and they eventually did that following week on the Tuesday afternoon. Now because of this mistake on their part I have taken it upon myself to make sure i call to make sure my timesheets are submitted on time every friday if I've worked the previous week and to my surprise this happened again this past week. I did not get paid. After numerous messages and phonecalls nothing was done to assist me. And guess what it was a long weekend meaning i was only going to get assisted today which is Tuesday. But till now, Tuesday night i have not received my wages yet. No proof that the payment has been sent to my account NOTHING. I am extremely disappointed in MPC recruitment. The more i follow up i feel like a nuisance as if they are doing me a favour by paying me for time that I've worked at a company that has probably paid them already for my services. Being a single mother of 4 i have bills piling up and getting temp assignments assists alot but not so helpful if you don't get paid for the time worked. I really hope no one is ever faced with such unprofessional and inconsiderate behaviour. Really disappointed...