Error during upgrade

On 7 October I upgraded via the call centre. <br> I was migrated from a top-up to open line contract without being informed. <br> I was told my current minutes, data and sms's will expire at the end of October yet it disappeared that day (I paid for those on 1 October so had no time to use it).<br> I have called on 9, 14, 19 and 21 October to only be told they are trying to get the call recording so are unable to assist me.<br> Please can someone get that call recording and sort this out for me!<br> I need to be migrated back to a top-up contract and also credited with my 280 minutes, 100 sms's and 100mb that was taken from me.<br>