A frustrated Uber customer who just wants to be able to visit his family has slammed the rideshare platform for drivers repeatedly cancelling his trips due to his weight.

When Martin calls an Uber to drive around Melbourne, he said it's normal to expect that the first few drivers will cancel his trip.

He said he has grown accustomed to the 'gut-wrenching feeling' of being refused entry to a driver's vehicle after they pull up.

'It's because of my size. I'm morbidly obese, I don't shy away from that,' he told A Current Affair on Wednesday.

'The drivers take one look at me and they go right past me.'