got fired today

So I’m a mechanic been working on mostly classic cars until recently got a job working on modern junk the company has 2 garages one in Overseal in Swadlincote and another in Coalville ( this is in the U.K. Americans) so the manager in Swadlincote is a snitch if you drop the smallest drop of oil he goes running to boss and make out you got oil everywhere for example ‘ today boss calls and fires me claims a l200 warrior I serviced Saturday suddenly dumped all its oil as the customer was driving it and had to be recovered yet I know for a fact it was tight and dry as was the new oil filter it wasn’t leaking when it left funny enough then he claims a seat ibiza had the wheel nuts come loose yet I always torque them and check them twice but the lad I worked with doesn’t bother he just uses the gun only seat Inez a I worked on was a it’s who they claimed was king of the gypsies because he had the biggest camp or something ( so what) yet that was months ago and he blamed everyone for ABS light coming on which was just a loose connector which we never touched I can only assume the boss and mangers conspired against me knowing I can’t prove it wasn’t my fault