Landlord bullying... help?

My ex-landlord (a lawyer) has not returned my deposit. Its been 3 and a half months since we moved out. One month after moving out, we called him to ask if he's returning the deposit soon. He apologised, and said he was very busy and hadn't got time to do an inspection of the flat after we moved, and that once he gets that sorted, he'd return us the deposit. Two months later (and still no sign of money or contact from him), called him again. This time he apologised and said that he was very busy but will endeavour to return us the money. Three months later, called him up again to ask what's happening with the deposit. This time he wasn't apologetic anymore. He said that upon inspection, he found that a corner of the kitchen worktop had chipped off and he had called up a contractor and was awaiting a quotation for the cost of repairing it. We knew what it was - basically a roughly 1-inch by 2-inch piece of the wood veneer that covered the kitchen worktop had chipped off sometime.