Don't buy from Triton

Triton showers.....what a rip off. I bought a Jade shower 3 and had it fitted by a qualified plumber/electrician of 40 years experience. Triton engineer turned up this morning and informed me that the main wire feed was not fitted tightly enough and subsequently the shower has burnt out. What after 17 months of twice daily use!!!. The Triton engineer also states that as I didn't pay him the £68.00 pounds call out today the bill would be increased to £99.00 because it would be invoiced. Is this a legal practice!!!!The plumber who fitted the shower also disputes the Triton Engineers statement as he feels that the wire was securely tightly fitted 17 months ago. This all sounds like a Triton rip off and I will not be buying their showers in future.......Customers beware-don't buy Triton.