No customer service!!!

Poorest service received. I booked ticket for myself, my husband and my son to return from East London to JHB on 13 March, this didn't happen, all flights from British Airways were cancelled. I tried the whole day the 13th of March to get hold of Gotogate without any success. Calls weren't answered, emails weren't answered. We had to make alternative arrangements to get back home because no service were received from Gotogate to assist their clients in alternative arrangements. I have requested a refund from them for my tickets which we purchased but couldn't use due to flights being cancelled. Up to date I haven't received any feedback from them regarding my refund.