Failure to replace item on time/Multiple excuses

I've been dealing with hollard and they have kept me waiting for over a month and a half to replace my Laptop and they are taking even more time to replace my Tablet. They keep asking me to pay the excess which I paid without hesitation, on the same day or as in the case of my Tablet, a day or two later, that they asked for. I would like to know what steps can I take in order to bring this company to book. They have given me the run around, I was told to collect my Laptop in Gateway, only to get an email saying that I must collect in Game N1, when I got there they had no idea what I was talking about, everybody assures you that they are dealing with the problem and nothing gets resolved. I've been waiting for my Tablet to be replaced since the 17th of September, we are now the 9th of November.