TiVo remote faulty

Hi, I am new on here.

I have been trying to arrange a replacement remote for my TiVo box with no joy at all. I have tried calling 150 but cannot get to talk to anyone. I have tried to order one online, also with no joy at all. The process is just really annoying so i am now on here.

My remote does work, in a fashion, but quite a few buttons do not work at all. TV, Info and Text buttons do not work at all. The Guide button and Home button work if i press hard for about 10 seconds. The Channel up or down buttons sometimes change 2 channels with just one press. Most of these buttons are on the right side of the remote.

The batteries have been replaced.

Please help.