TLS CONNECT VISA PAYMENTS

I am battling to get hold of someone locally to assist with a problem that exists on TLS Connect Merchant side. I have been trying for 3 days to put through visa payments which are being rejected. The bank has done a thorough investigation and the problem is not on their side. On speaking to someone from the PE TLS he said he is aware of the problem and it is random. Due to this our visa appointments which we can no loner secure as they are taken up by other applicants, so we will now sit without time slots and our team needs their passports back for their schengens by the 22 October. I have email twice and I have called the wonderful UK centre number that was given to me only to be told I will be charged 1pound per minute.... I cannot redo these applications on another computer or use another email address as this is not an option. Help i am so frutsrated by the lack of response from TLS Connect