So in the beginning of this month I moved into a new flat and there were a large number of issues when I first moved in, the toilet having a major plumbing issue where it was blocked to the point I couldn't use it, the washing machine is completely broken and a number of other smaller issues. I had obviously not foreseen these issues before moving in. The toilet was promptly fixed but the estate agent keeps dragging out the washing machine issue. She says she'll get a new one ordered but she said that around the 8th and that she needed her manager to make the order and I'd have it the next week. The next week came and it was still not ordered and she said she'll get the manager and I should expect it by Monday the next week latest. It's now Wednesday and yesterday(Tuesday) I sent her an email about how disappointed I was with how they're delaying sorting out a washing machine especially as they know I'm 34 weeks pregnant and need to get all my baby stuff washed and prepared. I've had no reply from her since last week and I've been calling her phone and she's not answering. I can't get through to anyone else at the estate agency as their phone just rings and no one picks up. The only point of contact I have is for her and taking more than 2 weeks to sort out a washing machine is unreasonable. Rent is due again at the beginning of the month and I'm thinking the only way to get them to take me seriously is to threaten to not pay the rent until they sort out the issue. I don't like rivalry, I've been polite and patient this whole time but at this point I feel like I really need to put my foot down because they're taking the p*ss. Any advice on how to handle this situation would be much appreciated.