Where do i stand with the purchase of this motorcycle ?

at the start of march i bought a honda varadero 125, i was told it had 1 months warranty with it. it rode fine for the first week or two. after this period of time i noticed the engine was making a loud rattling noise, i took it back and after 2 whole weeks they said they couldn't find the problem and so replaced the engine completely (the bike is on a 57 plate too!) the other day i skidded and the bike fell to the ground, the impact was not hard and only caused damage to the front cowling. i had since done more than 200 miles on the bike and now the speedo has stopped working. just now on the way back from work i have noticed the F1 light on the dash lights up. quite frankly im rather more annoyed than i am allowed to put in words on here, any advice would greatly be appreciated. i apologise for my lack of grammar. thanks !