Hi I have a swan stc7020w tumble dryer. It turns on but when I press start it just beeps and doesn’t do anything. Also it has leaked water underneath and had loads of water and gunk underneath the heat exchanger. I had bought it from a shop as a refurb with 30 days gaurentee and conveniently broke on 32 days so they won’t help me out and said it’s now my problem ? any ideas would be really appreciated thanks