Ford Mondeo Wiper Problem?

Hiya,

Anyone out there advise me on what my problem may be as i've had my car at 2 different garages and with what they say it's gonna end up costing more than my car to fix. Basically my front and rear wipers on my 2001 mondeo have packed in due to the snow and me being a pratt no clearing it off properly.
Basically they keep blowing the fuse when a new one is put in, the last guy even tried a bigger fuse, the wipers then moved but ended up blowing that as well so don't know if it's the motors or some other electrical problem as it almost blew his test meter as well he said. Anyone any ideas at all?

Thanks