Trimtech mover fails in 30 days

Bought a Trimtech lawnmower Bs450 125cc at Builders Alberton 9th November, engine damage after 4 uses, Briggs & Stratton engine. Andrew Law of Trimtech say on wear and tearand only good of a town house , use 5 minutes a day maximum, more than that it will fail, repair or buy a 160 or 200cc one. My issue that I bought this machine and deal with Builder there problem and yours. Andrew Law not interested to sort out, talk to other dealers now Trimtech as not good machines, I paid R2798.00 for cutting short well kept grass. Stay away from bad attitude and service