Sorry you had a sub-optimal time, Vicky
Don't give up though - when it all goes right, skiing's one of the most fun activities you can do with your clothes on.
When I was skiing regularly (i.e. at least once/twice a season) I had my own skis, poles and boots. Once I realised that carrying skis to and from the resort was a PITA, I went to renting skis only. Once you find a pair of boots that fit, you won't want to give them back at the end of the week.
A lot of hire places will be only too happy to sell you their boots, or you can make a not of the make and model and pick up a pair in the post-season sale.
I strongly recommend having your own boots. If only 'cos hire ones are stinky