Big Boy S******s poor quality makes

I bought a Big Boy gomoto strider 125cc frim a Big Boy dealer at Wierda Park (Mohammad) in March 2019, the day i bought it it had a problem with the fuel tank lid not closing completely, i brought it to Mohammed's attention and he said he placed an order for a new lid and it'd be shipped within 3-4 weeks till today it hasn't arrived. A month and a half after buying it it started having problems of nuts falling off, one that keeps doing it frequently is the swing arm, the rod there just cuts off while driving, i only notice when parked while doing my inspections before i start it. March 4th 2019 i took it back to him to fix it for the 3rd time (bare in mind i only have less than 4 months with the bike) this past Saturday 22 June 2019 it gave me the same problem of the swing arm, i called his office to ask how much it is to fix it and it was said R400. How am i expected to pay such a fee on a monthly basis on a "Brand new bike?" free advise from me is never to buy a GoMoto Strider due to poor quality rods and make