Am I entitled to replacement vehicle?

Hello,

I had a breakdown yesterday and the RAC guy got my car working temporarily and followed me to the garage. The problem is my car is still in the garage and I need it for work tomorrow. My RAC cover with my insurance (IGo4More) has onward travel included I think, is it not too late to get a replacement vehicle even though the breakdown happened yesterday? If so how would I go about getting it and how would it be delivered to me?

Thanks.