privacy: no DPA since April 2021 - no support?

Any idea how to get a signed DPA (individualised version) when neither Privacy nor key account manager doesn't talk to me anymore...? This is the long story so far: 

• Apr 2021 – agreement on DPA (applicable also to ECG Data Protection Act ) with key account
• May 2021 – reminder to key account due to missing signature
• June 2021 – reminded twice
• July 2021 – receive DPA without Zoom signature, resend signed by our CEO
• Aug 2021 – remind on missing Zoom signature
• Sep 2021 – remind again
• Oct 2021 – remind again and – as there is no answer – mail to team Privacy (incident was opened) – no answer by now (Aug 2022)
• March 2022 – reminder to team Privacy – no answer
• Apr 2022 – Zoom call with key account who announces to contact legal department
• May 2022 – feedback: DPA meanwhile too old, new version is prepared
• June 2022 – once more reminding key account on pending issue
• July 2022 – next reminder, no answer
• Aug 2022 – Zoom call with key account who accounces to check and come back with result on 31 Aug in a further call, but again isn’t available at scheduled time