Help after a bad customer support! (47 days and waiting...)  

Help after a bad customer support! (47 days and waiting...)

I bought my "Prusa i3 MK3/S/+ to MK4 upgrade kit" in 19/09/23  (order 1695156651),and received it in 20/12/23

Mounted it, worked correctly until 05/06/24: the printer stopped working, showing a blue screen (see image 1).I contacted the online support, and it was said that they would send a new mainboard (xBuddy)

I received the mainboard in 14/06/24, changed it, the printer worked, but in 20/06/24, the printer stopped again, showing a red screen (heatbed port overcurrent, see image 2).I turned it off, then turned it back on, but, now it only showed a black screen on it

Contacted the support, did all the requests they have said (photos, videos, etc), showing that the hardware was intact, no damage on any of the cables

The support said only that it was strange, and said that he would send the case to the support and they would contact me through e-mail

Gmail - Broken MK4

Resuming the e-mail, they said that they would send other xbuddy with the cables in 08/06/24; I asked for the tracking number, and today they respond with the tracking number of the first xbuddy that didn't work, and that's it!

Would anyone suggest other option for support, because the e-mail unfortunately, is totally confuse and inefficient

Thanks