hi there
that is the standard answer, and what they say about being approached by lots of cleaning companies is true, but it is the follow up service that you give, that needs to be spot on.
cold calling, hard work but pays off, the idea is to make sure that your company name is at the top of the reserve list, so when there usual cleaner lets them down you then get your chance.
the other thing about managing agents is that they represent the residents, and they should get three quotes when reviewing services, so offer to provide comparative quotes to them, the other predominant factor at present is that residents are demanding that their service charge either remains the same or infact reduces, therefore the market is competitive.
when you have called them, log them on your system so that in 4 weeks time you can ring them again, and then 4 weeks again after that.
it is about persistence.
regards
martin